Changes in single neuron firing rates in area V1 of monkeys as a function of selective attention would provide support for the computational models of attention. The correct option is (C).
Attention is the cognitive process that allows humans to concentrate on one specific aspect of their surroundings, whether it is a sensory input or a thought in their minds.
The attentive system can be directed internally or externally. Several models have been developed to explain the mechanisms of attention.
The two primary categories of models of attention are early-selection models and late-selection models.
The computational model of attention is a theoretical model that has emerged from cognitive psychology and cognitive neuroscience research.
It proposes that selective attention is not the result of a bottleneck or filter, but rather a selection process that includes a combination of selective amplification of relevant information and selective inhibition of irrelevant information.
In addition, it proposes that attentional selection is influenced by previous experience, task demands, and the individual's goals.
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what is the specific receptor site on the host cell that the virus needs to attach and infect?
The specific receptor site on the host cell that the virus needs to attach and infect is the cell surface receptor.
A cell surface receptor is a protein that spans the plasma membrane of a cell and acts as a signal transducer that recognizes extracellular molecules and stimulates an intracellular response.
This response could involve changing the membrane potential or an intracellular signaling pathway. The virus's attachment to a host cell is dependent on the presence of specific host cell receptors. The virus uses these receptors to enter host cells and replicate, causing disease.
Many viruses bind to specific proteins on the cell surface of the host, while others bind to glycoproteins or glycolipids. For example, the flu virus binds to sialic acid molecules on the surface of host cells, while the human immunodeficiency virus (HIV) binds to the CD4 receptor and the chemokine receptor.
The binding of a virus to a cell surface receptor is often the first step in viral infection. Once the virus binds to the receptor, it triggers a series of events that result in the virus entering the cell and taking over its machinery to replicate itself.
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which of these characteristics would you expect to find in a member of the bilateria?
a. Segmentation
b. Coelom
c. Two tissue layers (diploblastic)
d. Specialized head region
One would expect to find the characteristic of specialized head region in a member of the Bilateria. Thus, option D is correct.
Bilateria is an animal clade with bilaterally symmetric animals. They are members of the Kingdom Animalia that are characterized by having bilateral symmetry during the embryonic development stage. The other characteristic options were:
A. Segmentation: It is a characteristic of Annelids, Arthropods, and Chordates. Segmentation refers to the division of the body into many parts, each with a separate function.
B. Coelom: It is a characteristic of many animal groups, such as Mollusca, Arthropods, and Vertebrates. It refers to a cavity that is completely surrounded by mesodermal tissue and is present in most animals.
C. Two tissue layers (diploblastic): This characteristic is found in Cnidarians and Ctenophores, which have two layers of cells, ectoderm and endoderm. These animals lack a body cavity, nervous system, and circulatory system.
D. Specialized head region: It is the characteristic of Bilaterians, which have a complex nervous system with a distinct head region. The centralization of the nervous system makes possible the evolution of highly complex neural circuits, enabling behavior that is more complex than that of diploblastic animals.
Hence, we can conclude that the characteristic of specialized head region would be expected to find in a member of the Bilateria.
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on darwin's voyage, he observed ostriches and rheas living on grasslands on separate continents. these two types of birds are similar, but not identical. how did darwin apply these observations?
Darwin applied the observation of ostriches and rheas living on grasslands on separate continents as he developed hypotheses to explain the distribution and differences of the birds.
Thus, the correct answer is he developed hypotheses to explain the distribution and differences of the birds (B).
Darwin discovered several species of animals that were geographically remote but similar in characteristics. He hypothesized that similar species must have diverged from a common ancestor that has adapted to various environments over time.
For example, the ostrich and the rhea both have long legs, allowing them to run quickly on the grassland plains they live on. They both have wings, but they do not fly, as the environment did not necessitate flying as a survival trait. The fact that the ostrich and rhea are similar in appearance and behavior but are geographically separate led Darwin to hypothesize that they must have descended from a common ancestor.
Your question is incomplete, but most probably your options were
A. He tested the birds to see if each would survive in the other’s environment.
B. He developed hypotheses to explain the distribution and differences of the birds.
C. He concluded that one of the birds must have evolved from the other bird.
D. He developed hypotheses to explain how each bird produced more of its own kind.
Thus, the correct option is B.
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At which of the following locations in the nephron would a nurse practitioner first expect blood to be largely free of plasma proteins? Bowman Space.
The Bowman capsule is the location in the nephron where blood is first largely free of plasma proteins. This is due to the filtration process that occurs in the glomerulus.
During filtration, fluid and small molecules, including proteins, pass through the capillary walls of the glomerulus into the Bowman capsule. The Bowman capsule then collects the fluid and molecules and reabsorbs most of the fluid, electrolytes, and other small molecules, leaving the proteins behind in the capillary bed.
This process occurs continuously and allows for the efficient removal of waste products and other foreign substances from the blood. The filtrate that passes through the Bowman capsule is then moved through the proximal tubule and distal tubule to be further filtered. The resulting filtrate is then collected by the collecting ducts and eventually excreted as urine. This use is of nephrons.
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an organism must be able to reproduce in order to be considered 'living'. group of answer choices true false
An organism must be able to reproduce in order to be considered 'living'. True. Reproduction is an ability that only living things have.
Reproduction is one of the basic features of life. It is a biological mechanism that allows living organisms to pass on their genetic material from one generation to the next. The ability to reproduce is a defining characteristic of life, and organisms that cannot reproduce are generally not considered alive.For example, viruses are not considered alive because they cannot reproduce on their own. They must infect a host cell and use the cell's machinery to reproduce.
In contrast, bacteria, plants, and animals are all considered living organisms because they can reproduce on their own, either sexually or asexually. Reproduction ensures the continuity of a species and allows for the survival and adaptation of organisms over time. Without the ability to reproduce, life on Earth would not exist as we know it.
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what cultural negative impact in relationship can influence and affect our relationships ?
Answer:
There are several cultural negative impacts that can influence and affect our relationships, including:
Communication barriers: Communication is a key aspect of any relationship. Cultural differences in communication styles, such as indirect or direct communication, can create misunderstandings and conflicts.
Stereotyping: Stereotyping can lead to negative assumptions and expectations about a person based on their culture, which can result in prejudice and discrimination.
Family expectations: Family expectations and values can play a significant role in cultural negative impacts on relationships. Pressure to conform to traditional gender roles or to marry within one's culture can cause conflict and tension.
Language barriers: Language barriers can cause difficulties in communication, leading to misunderstandings and difficulties in building intimacy and trust.
Differences in beliefs and values: Cultural differences in beliefs and values, such as religious or political views, can create tension and conflicts in relationships.
Overall, it is important to recognize and address these cultural negative impacts to promote healthy and positive relationships.
extension of disc material beyond the vertebral confines with the largest measurement being that of the depth of the displaced material is best termed a
An extension of disc material beyond the vertebral confines with the largest measurement being that of the depth of the displaced material is best termed as a disc protrusion.
A disc protrusion is a spinal disc disorder in which the nucleus pulposus extrudes through the outer layer of the fibrous ring (annulus fibrosus) and protrudes into the spinal canal, either backward or sideways.
The symptoms of disc protrusion include:
Intermittent or persistent back and/or leg pain, Weakness or numbness in the limbs, Loss of bowel or bladder control (in severe cases), Pain that worsens when bending or twisting.The main causes of disc protrusion include Ageing, Poor posture, Trauma to the spine, and Repetitive strain on the spinal column from work or exercise.
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the large rough bony projection located lateral to the neck of the femur is called the . question 5 options: a) lesser tubercle b) greater tubercle c) greater trochanter d) greater tuberosity e) lesser trochanter
The large rough bony projection located lateral to the neck of the femur is called the C) Greater Trochanter as it serves as a means of attachment.
The greater trochanter is a large, rough, bony projection located on the lateral side of the neck of the femur, or thigh bone. It serves as an attachment site for various muscles of the hip and thigh, including the gluteus medius, gluteus minimus, piriformis, and obturator internus.
These muscles assist in movements such as abduction, internal and external rotation of the hip, and extension of the hip and thigh. The greater trochanter is an important anatomical landmark in the examination of the hip, and it can be palpated with the fingers. It can also be visualized in an x-ray or CT scan.
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life is best defined as the ability to: group of answer choices find and metabolize food for energy. move and escape predators. replicate and conduct metabolic activity. convert solar energy into food. reproduce and breathe oxygen gas.
Life is best characterized as the ability to: reproduce and breathe oxygen gas. Background from The Limitations of Biological Life in Planetary Systems. Option 5 is Correct.
Life is a property of a living creature that separates the latter from a dead organism or a non-living item, as particularly differentiated by the capacity to grow, metabolize, respond (to stimuli), adapt, and reproduce.
There is a concise definition “Life is self-reproduction with variations” that is notable for its brevity and because it contains two key features of living organisms: reproduction and evolution. According to the NASA definition of life, "Terran life is the only type of life we are aware of. It is a self-sustaining chemical system capable of Darwinian evolution." Option 5 is Correct.
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Correct Question:
Life is best defined as the ability to: group of answer choices
1. find and metabolize food for energy.
2. move and escape predators.
3. replicate and conduct metabolic activity.
4. convert solar energy into food.
5. reproduce and breathe oxygen gas.
the immune system is weakened in aids patients because the human immunodeficiency virus directly attacks the lymphocytes called
determine the correct answer
* sphinchter muscle block urine as it"
1- voulantry muscle
2-sync with urinary bladder muscle
3_it will relax to exert urine
4-all the aaboe
Option 2. The sphincters' muscle block urine as it sync with urinary bladder muscle
What does the sphinchter muscle do?The sphincter muscle is a ring-shaped muscle that surrounds the urethra, the tube that carries urine from the bladder out of the body. There are two sphincter muscles that control the flow of urine: the internal sphincter, which is made up of smooth muscle and is under involuntary control, and the external sphincter, which is made up of skeletal muscle and is under voluntary control.
The sphincter muscle works in coordination with the bladder muscle to control the flow of urine. When the bladder is full, the bladder muscle contracts to expel urine, while the internal sphincter muscle relaxes to allow urine to pass through the urethra. The external sphincter muscle remains contracted to maintain continence.
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dicyclohexylcarbodiimide (dccd) reacts with asp and glu residues in the c subunits of f0 and blocks atp synthase activity. what happens to the rate of electron transport when dccd is added to actively respiring mitochondria?
Dicyclohexylcarbodiimide (DCCD) reacts with Asp and Glu residues in the c subunits of F0 and blocks ATP synthase activity. The rate of electron transport when DCCD is added to actively respiring mitochondria is decreased.
The Dicyclohexylcarbodiimide (DCCD) inhibits mitochondrial ATPase by covalently binding to a carboxyl residue. It reacts with the Asp and Glu residues present in the c subunits of F0, and as a result, ATP synthase activity is blocked. Mitochondrial ATPase (F1F0) is an enzyme that synthesizes ATP using energy from the electrochemical proton gradient that is generated by the electron transport chain during oxidative phosphorylation.In the absence of ATP synthase activity, the proton gradient generated by electron transport can not be used to generate ATP.
As a result, less ATP is synthesized by actively respiring mitochondria. The rate of electron transport decreases as a result of this. This reaction also inhibits the ATPase activity of other complexes involved in electron transport. As a result, it decreases the rate of electron transport and ATP synthesis in respiring mitochondria.DCCD reacts with Asp and Glu residues in the c subunits of F0 and blocks ATP synthase activity. The effect of adding DCCD to actively respiring mitochondria is that the rate of electron transport is decreased.
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What are the advantages of reproducing with seeds rather than spores?
1)Seeds have hard covering that protects them from harsh environments.
2)Seeds are N*ked.
3)Seeds have embryos with a food supply.
4)Seeds are protected in hard, scaly structures called cones.
5)Seeds are not covered by a fruit.
Protection, distribution, and genetic diversity of progeny are the key advantages of seeds over spores.
What benefits do seeds provide in terms of reproduction?The embryo is shielded by the seeds from harmful environmental factors. They give the developing embryo food and parental care. The spread of the seeds to far locations keeps members of the same species from competing with one another, averting extinction.
Do spores have a covering to protect them?The spores are an asexual form of reproduction. Each microscopic spore has a hard outer covering called a cyst that protects it from unfavourable environmental factors like high temperatures and low humidity. Hence, they have a lengthy lifespan.
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What are the similarities with a insect, bat and bird wings
Answer:
They all can fly, they have to extend their body to the wings. They arent inherited from their ancestors.
Explanation:
Which of the following best describes how the altering of the plant’s genome by scientists is similar to naturally occurring genetic mutations .
1 point
Natural genetic mutations will alter the performance of a gene just like if it is altered by scientists.
Natural genetic mutations alters a gene but when done by scientists it randomly alters genes.
A mutation can be a drastic change to the genome, altering by scientists is less dramatic.
A change caused by scientists won't alter the chromosome, a change caused by a mutation will alter the chromosome.
The option that best describes how the altering of the plant’s genome by scientists is similar to naturally occurring genetic mutations is: "Natural genetic mutations will alter the performance of a gene just like if it is altered by scientists."
Natural genetic mutations and the altering of the plant’s genome by scientists both involve changes to the genetic material of the organism. Both types of alterations can lead to changes in the function or expression of specific genes. In both cases, the changes can be beneficial, neutral, or harmful to the organism depending on the specific mutation or alteration.
While scientists can control the specific gene or genes that are altered, the effects of the alteration are still subject to the complex interplay of genes and the environment, much like the effects of naturally occurring genetic mutations. Therefore, the alteration of the plant's genome by scientists is similar to natural genetic mutations in that both involve changes to the genetic material that can affect the performance of the gene or genes.
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from the pedigree, if individual b marries someone from the population at large (where the trait is expressed one in 8,100 people), what is the probability they have a child expressing the trait?
Without additional information about the mode of inheritance and the genotypes of individuals in the pedigree, it is not possible to accurately calculate the probability of their child expressing the trait.
However, we can make some general assumptions based on the information given. If the trait is rare and expressed in one in 8,100 people in the population at large, it is possible that the trait is recessive and requires two copies of the causative allele for the trait to be expressed. If this is the case, individual b would need to be heterozygous for the trait to be a carrier, and their partner would also need to be a carrier or affected by the trait in order for their child to have a chance of expressing the trait.
Assuming these conditions are met, the probability of their child expressing the trait would depend on the genotype of the parents and the specific mode of inheritance. For example, if the trait is inherited in an autosomal recessive manner, the probability of their child expressing the trait would be 25% if both parents are carriers (heterozygous). However, if the trait is inherited in an autosomal dominant manner, the probability of their child expressing the trait would depend on the genotype of the parents.
Without additional information about the mode of inheritance and the genotypes of individuals in the pedigree, it is not possible to accurately calculate the probability of their child expressing the trait.
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many of the antiviral drugs currently used to treat hiv/aids also interfere with an enzyme that helps mitochondria multiply. treatment can therefore result in a decrease in the number of mitochondria found in certain tissues. given this information, what might you expect to see in patients treated with antiviral drugs?
The patients treated with antiviral drugs might experience mitochondrial toxicity. There might be some possible adverse effects such as metabolic disorders, fatigue, loss of energy, and muscle weakness. Antiviral drugs have been found to interfere with mitochondrial functioning leading to mitochondrial toxicity, which results in severe consequences for the patient's health.
Antiviral drugs can interfere with an enzyme that helps mitochondria multiply. The treatment can result in a decrease in the number of mitochondria found in certain tissues. Given this information, patients treated with antiviral drugs may experience mitochondrial toxicity.
Mitochondria are the powerhouse of the cell. They are involved in the production of energy (ATP). There is a possibility of mitochondrial toxicity in patients treated with antiviral drugs that interfere with the functioning of mitochondria, which results in a decrease in the number of mitochondria found in certain tissues. This can cause a severe reduction in the production of ATP and thereby affect the energy balance of the cell.
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describe the changes that occur in skeletal muscles following a period of (a) long-duration, low-intensity exercise training; and (b) short-duration, high-intensity exercise training.
The changes that occur in skeletal muscles following a period are as follows:
The following are the changes that occur in skeletal muscles following a period of long-duration, low-intensity exercise training:
Blood flow increases in the working muscles in response to aerobic training.
The number of capillaries surrounding the muscle fibers increases, allowing for increased oxygen and nutrient delivery to the muscle fibers.
This type of training increases the number of mitochondria in muscle fibers, increasing energy supply and utilization.
The size of slow-twitch fibers grows and their contractile function improves, allowing for greater endurance and resistance to fatigue.
The following are the changes that occur in skeletal muscles following a period of short-duration, high-intensity exercise training:
The size of fast-twitch fibers grows, increasing power, strength, and speed.
The nervous system learns to recruit more muscle fibers for short bursts of maximal contractions.
Mitochondrial volume may increase, but not to the same extent as with aerobic training.
Blood flow to the muscles does not increase to the same extent as with aerobic training.
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Energy from cellular metabolism is converted to ATP by respiring organisms. Place the following steps in the correct order. Events (5 items) (Drag and drop into the appropriate area) - Influx of Hthrough ATP synthase drives ATP production - NADH and FADH are oxidized by electron transport proteins. - An electrochemical gradient of protons is established (â–³p). - Glycolysis and TCA cycle generate NADH & FADH
- Electron transport releases energy that is used to translocate H+.
Correct order:
Glycolysis and TCA cycle generate NADH & FADH --> NADH and FADH are oxidized by electron transport proteins. --> Electron transport releases energy that is used to translocate H+. --> An electrochemical gradient of protons is established (â–³p). --> Influx of H+ through ATP synthase drives ATP production.
The main source of energy for cellular functions is ATP, which is produced by cells through the process of cellular respiration. Glycolysis, the citric acid cycle (also known as the TCA cycle or Krebs cycle), and oxidative phosphorylation are the three primary phases of the reaction (which includes the electron transport chain and chemiosmosis). The majority of the ATP is created in the electron transport chain, which is the last phase of cellular respiration.
A large enzyme complex called ATP synthase crosses the inner mitochondrial membrane. It drives the synthesis of ATP from ADP and inorganic phosphate using the energy from the proton gradient. Once H+ enters ATP synthase, a rotor-like structure rotates within the enzyme complex, changing the active site's shape and catalysing the creation of ATP. The ultimate consequence is the creation of ATP, which is subsequently utilized to fuel energetically demanding cellular functions.
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suppose another organism, organism x, is discovered. suggest how scientists would use dna comparison to classify organism x?
To classify organism X, scientists would compare its DNA with that of other known organisms. They would look at the sequence of bases in the DNA and measure the similarities and differences between the two organisms.
The classification of organisms is based on the similarities and differences in their DNA, which is used to infer the evolutionary relationships between different organisms.The following are some of the ways in which scientists would use DNA comparison to classify organism X:By comparing the nucleotide sequences of DNA from organism X to those from other organisms, scientists could determine the degree of similarity between the sequences.
This similarity could be used to infer the degree of evolutionary relatedness between organism X and other organisms.By analyzing the genomic structure of organism X, scientists could identify the presence of specific genes that are associated with certain functions or characteristics.
These genes could be used to infer the evolutionary relationships between organism X and other organisms with similar genomic structures.By comparing the gene expression profiles of organism X to those of other organisms, scientists could identify similarities and differences in the patterns of gene expression.
These similarities and differences could be used to infer the evolutionary relationships between organism X and other organisms with similar gene expression patterns.In conclusion, DNA comparison is an essential tool for classifying organisms, and it has revolutionized the field of biological research.
By using DNA comparison, scientists can infer the evolutionary relationships between different organisms, and they can better understand the mechanisms that underlie the diversity of life on Earth.
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the scientific study of life is called multiple choice anatomy. biochemistry. limnology. ecology. biology.
The scientific study of life is called biology. The correct option is d.
What is Biology?Biology is a natural science that focuses on the study of life and living organisms, including their physical structure, chemical processes, molecular interactions, physiological mechanisms, development, and evolution. Biology encompasses a wide range of topics, from the smallest entities such as viruses and bacteria to the largest organisms such as plants and animals.Biology is one of the most important subjects in the field of science because it helps us to understand the living world around us. Through biology, we can learn about the structure and function of living organisms, as well as their behavior, ecology, and evolution.
Biology is a dynamic field, and new discoveries are being made all the time. As our understanding of living organisms grows, so does our ability to apply this knowledge to solve real-world problems such as disease, pollution, and climate change. Biology is an exciting and rewarding subject, and studying it can open up a wide range of career opportunities in fields such as medicine, biotechnology, conservation, and research.
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based on your knowledge of ploidy level in various human cells, would you expect human brain cells to be diploid or haploid?
The ploidy level of human brain cells is diploid. This means that it contains two copies of each chromosome in its nucleus.
Based on my knowledge of ploidy level in various human cells, I would expect human brain cells to be diploid.Ploidy refers to the number of sets of chromosomes found in a cell's nucleus. A diploid cell, for example, contains two sets of chromosomes (2n).
Human somatic cells, for example, are diploid, meaning they have two sets of chromosomes. Human brain cells are also diploid because they are somatic cells.The majority of human cells are diploid. They have two sets of chromosomes, with one set coming from each parent.
In humans, there are 46 chromosomes in total. Gametes, which are sperm and egg cells, are the exception. Gametes, also known as sex cells, are haploid, meaning they have only one set of chromosomes. They contain 23 chromosomes in humans.
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major benefits of using pesticides include . multiple select question. increased crop yields development of pesticide tolerance reduced food costs decreased yield
The correct options are "increased crop yields" and "reduced food costs". So there were two correct options.
The major benefits of using pesticides include:
Increased crop yields: Pesticides protect crops from damage caused by pests and diseases, which can lead to increased crop yields and better-quality produce.Reduced food costs: By protecting crops from pests and diseases, pesticides can help keep food prices low and reduce the risk of food shortages.Development of pesticide tolerance: By exposing pests and diseases to pesticides over time, they may develop resistance or tolerance to certain pesticides, making them less effective. However, this is not necessarily a benefit of pesticide use, as it can also lead to the development of superbugs or superweeds that are resistant to multiple pesticides.Learn more about pesticides: https://brainly.com/question/25788752
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rhythmic waves of muscular contraction to move food from the esophagus to the stomach. this is called ____
Answer:
Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract. It starts in the esophagus where strong wave-like motions of the smooth muscle move balls of swallowed food to the stomach.
Explanation:
Answer = Cookie
No answer = Nothing
Answer:
i got the diagram with answers that you are looking for.
Explanation:
Please do learn them and study them! Hope it helps :)
a single algal species competes for a required resource, silicate. as the number of individuals increases, there is less silicate available for the original individuals. this is an example of:
This is an example of competitive exclusion, where a single species competes for a limited resource and as the population size of that species increases, there is less of the resource available for the original individuals.
Competitive exclusion occurs when two or more species compete for the same limited resources in the same ecological niche, and one species outcompetes the others to the point of driving them to extinction or to a different niche.
As the population of the dominant species increases, the availability of resources decreases, making it harder for other species to survive. This leads to a reduction in biodiversity as some species are unable to coexist with the dominant species.
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a cell has an internal glucose concentration of 10mm and is placed into a solution containing 35mm glucose. the plasma membrane has glucose transporters present. what will happen to the internal glucose concentration in the cell?
The internal glucose concentration of the cell will decrease when placed in a solution containing 35mm glucose. This is due to the presence of glucose transporters on the plasma membrane.
Glucose transporters move glucose molecules from an area of high concentration (outside of the cell) to an area of low concentration (inside of the cell). As the external glucose concentration (35mm) is higher than the internal glucose concentration (10mm), the glucose transporters will move glucose molecules from the external solution into the cell, thus decreasing the internal glucose concentration. This process is a type of active transport, which uses the energy from the cell in order to move molecules from an area of higher concentration to an area of lower concentration. In this case, the energy used is ATP, which is used to power the glucose transporters.
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Lichens show
(a) Symbiosis
(b) Commensalism
(c) Parasitism
(d) Cooperation
Answer:
a
vhrgrthnmmrmmmmrururmm
Explanation:
gtwnhrnruummumurumrjmrmmjmjmrrmrmmrmrrmmrmuumrmrmmrmrrmmrrmrumrmrmrmrmrrumrrmrururmrmmrmrrmrmmrmrumrumrmrmumurmmrrmmrmrmrrmrumrmrrmrmrmrmrm yeey ey wyey y.ee ywy wtwywttwyewtwywywyeyywtwwtwyeynyeyywnenenywywwnynyeeyeyeyeynnu
in drosophila, the genes j and r are linked. parental flies of genotype j r / j r and j r/ j r are crossed. what allele arrangement would the f1 flies contain?
In Drosophila, the genes j and r are linked. Parental flies of genotype j r / j r and j r/ j r are crossed. The allele arrangement the F1 flies would contain is j r / j r.
The genotype is the genetic makeup of a living organism that contains genetic information about the genes inherited from parents. These genes may either be dominant or recessive, which have a significant role in determining the phenotypic traits of the organism.The genes that are closely linked are located near to each other on the same chromosome. The genes that are far apart are likely to exchange with other chromosomes during the process of meiosis, which is known as crossing over. In Drosophila, the genes j and r are linked.In the given problem, parental flies of genotype j r / j r and j r / j r are crossed. Therefore, the F1 flies would contain the allele arrangement of j r / j r. Hence, the correct option is A. j r / j r.
An allele is an alternative form of a gene that has different nucleotide sequences. This alteration may change the information of the protein coding sequence of the gene or may affect the expression of other genes in the cell. Therefore, the allele is responsible for genetic diversity among the species. The different alleles may either be dominant or recessive, which have a significant role in determining the phenotype of the organism.
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if an animals gametes contain 10 total chromosomes how many chromosomes must exists in each of the germline cell that produces the gametes
If an animal's gametes contain 10 total chromosomes, then each of the germline cell that produces the gametes must contain 20 chromosomes.
What is a gamete?A gamete is a haploid cell that combines with another haploid cell during fertilization. Gametes carry genetic information from the parents to the offspring. In most animals, gametes are produced by meiosis from germ cells in the reproductive organs.
Gametes are formed by a process called meiosis. During meiosis, the chromosome number is halved so that the resulting gametes have half the number of chromosomes as the original cell. For example, in humans, the body cells have 46 chromosomes (23 pairs) while the gametes have 23 chromosomes (one from each parent).
Chromosomes are long strands of DNA that contain the genetic information needed to create an organism. They are made up of genes, which are the instructions for making proteins.
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