The result of a point mutation that changes a template gene sequence from 3'-tacgccatatat-5' to 3'-tacgccatctat-5' is that the ninth nucleotide in the sequence has changed from an "A" (Adenine) to a "C" (Cytosine). This is known as a substitution mutation since one nucleotide has been swapped for another.
The resulting amino acid is changed due to a point mutation that changes a template gene sequence from 3'-tacgccatatat-5' to 3'-tacgccatctat-5'.
Point mutation is the substitution of one nucleotide for another in a gene's DNA sequence, which may have no effect, produce a different amino acid, or prevent the gene from functioning properly. Since each codon in a gene's DNA sequence corresponds to a specific amino acid, changing the nucleotide sequence can change the amino acid sequence.
As a result, the resulting amino acid will be different because of the point mutation that changes the template gene sequence from 3'-tacgccatatat-5' to 3'-tacgccatctat-5'.
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golden shiner and mud minnows lay their eggs on chara (green algae). in which pond would you find them?
Golden shiner and mud minnows lay their eggs on chara (green algae) in ponds with favorable conditions. Golden shiner and mud minnows are two fish species that rely on chara for spawning and reproduction. You can find them in ponds with warm water, high nutrient content, and a healthy chara population.
Chara is a type of green algae that grows in freshwater, and it provides a suitable surface for these fish to lay their eggs.The habitat of Golden shiner and mud minnows are found in many ponds across North America. Golden shiners are the most widely distributed minnows in North America and are found in almost every pond. These fish species can tolerate a wide range of water quality and temperature, which makes them very adaptable to various environments.
Chara is a favorite place for these fish to lay their eggs, and this type of green algae is common in shallow, warm ponds with high nutrient content.So, you will find golden shiner and mud minnows in ponds with chara (green algae). The presence of chara is a sign of a healthy pond ecosystem, as it provides food and habitat for many aquatic species.
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a lawyer is presenting a hair sample with its corresponding nuclear dna that was found at the crime scene. how will this most likely affect the criminal case?
Answer:
this will further the criminal case- absolutely! but i would need more context as to how it would further the case. does that make sense?
Explanation:
what is the adaptive significance of having these structures on the lower surface of the prothallium
The adaptive significance of having archegonia and antheridia on the lower surface of the prothallium rather than on the upper surface is Protection from desiccation.
Desiccation is the process of drying out or removing moisture from a living organism or its environment. In biology, desiccation can have both positive and negative effects on organisms depending on the extent and duration of the drying. Desiccation plays an important role in the survival and adaptation of organisms, but it can also be ar significant stressor and challenge for many species.
Some organisms, such as certain bacteria and seeds, can survive desiccation by entering a state of suspended animation known as anhydrobiosis. During anhydrobiosis, the organism reduces its metabolic activity and protects its cellular components from damage until water becomes available again.
However, for many other organisms, desiccation can be deadly. Dehydration can damage cells and tissues, disrupt physiological functions, and ultimately lead to death. For example, in plants, prolonged periods of water shortage can cause wilting and tissue damage, while in animals, dehydration can lead to decreased cognitive function, kidney failure, and even death.
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Complete Question: -
What is the adaptive significance of having archegonia and antheridia on the lower surface of the prothallium rather than on the upper surface?
what is an osteocyte? a bone-forming cell a bone cell surrounded by matrix a nerve cell in the bone a bone marrow cell a cell that breaks down bone
An osteocyte is a bone cell surrounded by a matrix. Osteocytes are cells that are found in bone tissue that are responsible for bone matrix maintenance and are located in small cavities known as lacunae.
The bone matrix contains collagen fibers and various mineral salts, such as calcium and phosphate. The osteocyte's function is to maintain the bone matrix by producing and secreting enzymes and regulating the mineral content. Osteocytes are also involved in calcium and phosphate homeostasis in the body. They're located in tiny lacunae, which are interconnected by tiny canals known as canaliculi. These canaliculi allow osteocytes to communicate with one another, as well as with cells on the bone surface. Osteoblasts are bone-forming cells, osteoclasts are cells that break down bone, and bone marrow cells are specialized cells that generate blood cells. Nerve cells, on the other hand, do exist in bone tissue, but they are not classified as osteocytes.
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the animal systems pathway does not work closely with careers in the agribusiness pathway. question 2 options: true false
False. Careers in the agribusiness track do overlap with those in the animal systems pathway.
Agribusiness pathwayThose who are interested in professions in fields that work with animals sometimes pursue the animal systems pathway, which encompasses studying animal biology, nutrition, breeding, and health. The production, processing, and distribution of agricultural products, including animal products like meat, dairy, and eggs, is one such field. Another is the agribusiness industry. Animal biology, nutrition, breeding, and health knowledge and abilities, all of which are addressed in the animal systems pathway, are necessary for success in this field.For instance, in order to keep cattle healthy and productive, those involved in livestock production need to be aware of the biology, behavior, and dietary requirements of animals.learn more about the agribusiness pathway here
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imagine a condition where the vessels that carry blood between the lungs and the body tissues were permeable to oxygen. what would you expect to observe relative to the normal condition of low permeability to oxygen in the vessels that carry blood from the lungs to the tissues?
If the vessels between the lungs and body tissues were permeable to oxygen, there will be a decrease in the oxygen supply to the body tissues.
Normally, oxygen-poor blood from the body tissues flows into the right side of the heart, and is then pumped to the lungs where it picks up oxygen and releases carbon dioxide. The oxygen-rich blood then flows back to the left side of the heart, where it is pumped out to the body tissues to supply oxygen to the cells.
If the vessels between the lungs and body tissues were permeable to oxygen, oxygen-rich blood from the lungs would flow into the right side of the heart, mix with oxygen-poor blood from the body tissues, and then be pumped out to the body tissues.
This would result in a reduced delivery of oxygen to the tissues, as some of the oxygen-rich blood from the lungs would bypass the body tissues and flow back to the lungs.
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methanogens, halophilesthe diagram shows a dichotomous key and a picture of a fruit. according to the key, the fruit comes from which species of tree?, acidophiles
According to the key, the fruit comes from a species of tree that is a methanogen, halophile, or acidophile. Thus, The fruit comes from the Black Cherry tree species (Prunus serotina).
The key to the given fruit picture: The given diagram is a dichotomous key that helps in identifying the fruit-bearing species of a tree. In the diagram, the key is designed as two statements that offer two choices, and we have to proceed with the one that is relevant to the specimen that is being examined. It's possible that the fruit comes from the Black Cherry tree species (Prunus serotina).
Methanogens and halophiles are types of archaebacteria. Methanogens are bacteria that generate methane by anaerobic digestion of organic matter in anaerobic environments such as the human gut, rice paddies, and landfills. Halophiles, on the other hand, are organisms that can tolerate high salinity, such as salt flats and solar salterns, which are extreme environments.
Therefore, the fruit comes from Black Cherry tree species (Prunus serotina) .
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what is the main function of the ribosomes in the cell? multiple choice to break down proteins into individual amino acids to provide strength and structural support for the cell membrane to form the nuclear envelope to synthesize proteins to synthesize dna
Answer:
break down proteins into individual amino acids
Explanation:
which would be most likely to occur if red blood cells (rbcs) were placed in a test tube containing a 10% salt solution?
Red blood cells (RBCs) placed in a 10% salt solution would likely experience osmotic lysis.
Osmotic lysis is a process where a cell bursts due to an imbalance in the concentrations of solutes on either side of the cell membrane. In this case, the 10% salt solution is hypertonic to the cytoplasm of the RBC, meaning the concentration of solutes in the test tube is greater than the concentration of solutes in the cytoplasm of the cell. This results in water being drawn out of the cell and into the test tube, making the cell shrink and eventually burst.
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Autoimmunity can result when the body fails to eliminate or silence ______ that would respond to and attack normal body tissues.
which sequence is correct? right ventricle > aorta > renal vein left ventricle > aorta > coronary artery left atrium > superior vena cava >
The correct sequence is left atrium > superior vena cava > right atrium .The human heart comprises four chambers - the left atrium and ventricle and the right atrium and ventricle.
The left atrium receives blood from the lungs, and the right atrium receives blood from the body ,.Atria are separated from the ventricles by the mitral and tricuspid valves. The left ventricle and right ventricle are connected to the aorta and pulmonary artery, respectively.
The pulmonary veins carry blood to the left atrium, while the superior and inferior vena cava carry blood to the right atrium. Right ventricle > aorta > renal vein sequence is incorrect. Left ventricle > aorta > coronary artery sequence is incorrect .The correct sequence is left atrium > superior vena cava > right atrium.
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true or false: as an adult, if you had to choose only one of these two foods (corn or beans) to provide you with essential amino acids, you would choose corn, because it provides more essential amino acids than beans.
if you had to choose only one of these two foods (corn or beans) to provide you with essential amino acids, you would choose corn, because it provides more essential amino acids than bean is a false statement.
Although corn does provide more essential amino acids than beans, neither of these foods alone is sufficient to provide your body with all of the essential amino acids. To obtain all of the essential amino acids, you would need to include a variety of different plant-based proteins in your diet, such as lentils, nuts, quinoa, and chickpeas.
For example, corn is high in leucine and tryptophan, but it does not contain methionine and cysteine, which are essential amino acids found in beans. Beans, on the other hand, are a good source of methionine and cysteine, but they lack other essential amino acids such as threonine, isoleucine, and lysine.
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alzheimer's disease is characterized by an accumulation of proteins such as beta-amyloid protein in the cells. beta-amyloid mrna levels do not increase in patients with alzheimer's disease. explain how beta-amyloid protein levels increase in these patients' cells.
Alzheimer’s disease is characterized by an accumulation of proteins, such as beta-amyloid protein, in the cells. The levels of the mRNA encoding the beta-amyloid protein, however, do not increase in patients with Alzheimer’s disease. This is because the mRNA is transcribed from DNA and the gene for beta-amyloid does not become more active .in Alzheimer’s patients.
Post-translational modification is a process where a protein undergoes modifications after it is translated from mRNA. In Alzheimer’s disease, these modifications cause the beta-amyloid protein to fold into a specific shape, or conformation, which is resistant to degradation. This shape is stable and accumulates in the cells, leading to the high levels of beta-amyloid found in Alzheimer’s patients. Additionally, the beta-amyloid protein can aggregate with other proteins to form large, insoluble deposits in the brain, which are known as amyloid plaques.
In summary, the levels of beta-amyloid mRNA do not increase in Alzheimer’s patients. However, post-translational modifications lead to an accumulation of the beta-amyloid protein, which forms insoluble deposits known as amyloid plaques in the brain.
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Which two systems work together to provide cells with oxygen and remove carbon dioxide from them?
, incorrect answer
Nervous and excretory
, incorrect answer
Nervous and circulatory
, incorrect answer
Respiratory and excretory
, incorrect answer
Respiratory and circulatory
Answer: Circulatory and respiratory systems
Explanation:
which of the following is the primary factor in oxygen's attachment to, or release from, hemoglobin? which of the following is the primary factor in oxygen's attachment to, or release from, hemoglobin? partial pressure of oxygen temperature blood ph partial pressure of carbon dioxide
The primary factor in oxygen's attachment to, or release from, hemoglobin is the partial pressure of oxygen.
Oxygen binds to hemoglobin in the lungs, where the partial pressure of oxygen is high, and it is released from hemoglobin in the tissues, where the partial pressure of oxygen is lower. The partial pressure of the oxygen gradient between the lungs and tissues drives the diffusion of oxygen into and out of hemoglobin.
Hemoglobin is a protein found in red blood cells that plays a crucial role in transporting oxygen from the lungs to the body's tissues and carrying carbon dioxide back to the lungs for removal. It consists of four subunits, each containing a heme group that binds to oxygen molecules. The iron in the heme group is responsible for binding to oxygen.
While factors such as temperature, blood pH, and partial pressure of carbon dioxide can influence the affinity of hemoglobin for oxygen, the primary factor governing attachment and release is the partial pressure of oxygen.
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the smallest and most basic units of lfie are microscopic, self ocntained untis encosed by a water replellign mebrane are called
Answer: Cells
Explanation:
The smallest and most basic units of life are called cells, and they are microscopic, self-contained units enclosed by a water-repellent membrane.
Cells are the smallest and most basic units of life, and they can vary in size and shape. They are enclosed by a plasma membrane that separates the inside of the cell from its surrounding environment. This membrane is selectively permeable, allowing certain molecules to pass through while blocking others.
Cells also contain genetic material, which is responsible for directing the cell's activities and replicating itself during cell division.
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true or false complex traits accumulate from many genes each contributing small amounts of characteristics
The statement 'Complex traits accumulate from many genes each contributing small amounts of characteristics' is true as this is polygenic inheritance.
In polygenic inheritance, multiple genes interact to affect a single trait. These genes may be located on different chromosomes and may come from both parents. Each gene contributes only a small portion to the overall trait, but taken together they can have a substantial effect.
For example, eye color is determined by multiple genes. Different combinations of alleles of these genes result in different eye colors. Additionally, the same gene can have different effects depending on the combination of alleles it is paired with.
Polygenic inheritance also plays a role in other traits, such as height, skin color, and behavior. These traits are determined by multiple genes, each of which contributes only a small amount. The genes interact in complex ways and are affected by environmental factors as well.
In summary, complex traits accumulate from many genes each contributing small amounts of characteristics. This phenomenon is known as polygenic inheritance.
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How have humans enabled emerging diseases to spread more rapidly?
Answer: Climate change, rapid urbanization, and changing land-use patterns will increase the risk of disease emergence in the coming decades
Explanation: i just know
assume that a species has a diploid chromosome number of 24. the term applied to an individual with 25 chromosomes would be .
An individual with 25 chromosomes would be referred to as aneuploid.
Aneuploidy is a chromosomal abnormality caused by a variation in the number of chromosomes in a cell's nucleus.
When compared to the diploid chromosome number, which is the standard chromosome number for an organism, it can either have more or fewer chromosomes than normal.
Diploid chromosome number is the number of chromosomes in the somatic cells of an organism. Diploid chromosomes can be found in organisms that reproduce sexually.
When gametes join during fertilization, the diploid chromosome number is returned to the offspring. The chromosome number is the same in both parents.
The haploid number of chromosomes is the number of chromosomes in the gametes. The haploid number of chromosomes is half that of the diploid chromosome number.
For example, if an organism's diploid chromosome number is 24, it has 12 haploid chromosomes.
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2. they describe conjugation (matings) done in liquid media where the recipient cells used to be on a biofilm and compared them with matings done with cells still on a biofilm. why did they do these by, at least, triplicate?
Conjugation in liquid media was performed in triplicate to ensure a consistent and reliable result. By performing the experiment multiple times, it allows for the possibility to compare and contrast the effects of the mating in different scenarios.
Furthermore, it provides a better understanding of the behavior of the recipient cells when they are no longer in the biofilm. For instance, the researchers may be able to measure the relative fitness of the cells when they are in liquid media compared to when they are still in the biofilm.
Additionally, replicating the experiment would reduce any variability in the results, ensuring that the conclusions drawn are reliable.
In summary, performing the conjugation experiment in triplicate allows for a more comprehensive evaluation of the effects of the mating, as well as provide a better understanding of the behavior of the recipient cells in different environments.
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if a mutation stops the ability for pepsinogen to respond to the presence of pepsin, what would happen to pepsin production
If a mutation stops the ability for pepsinogen to respond to the presence of pepsin, pepsin production will be reduced.
Pepsinogen is a proenzyme, or inactive precursor, of pepsin that is synthesized in the chief cells in the stomach. Pepsinogen is transformed into pepsin, a proteolytic enzyme that is active in acid environments such as the stomach, by the action of hydrochloric acid (HCl).
Pepsinogen is converted to pepsin, a more potent form of the enzyme, in the presence of an acidic pH of 2 or less, which denatures the protein that covers the active site on the pepsinogen molecule. HCl is produced by the parietal cells in the gastric glands of the stomach lining, and the secretion of both HCl and pepsinogen is stimulated by the presence of food or other digestive stimuli.
Because the enzyme is a precursor to pepsin, it is critical to the digestion process. Pepsin is critical for breaking down proteins in the stomach. Without pepsin, proteins would be broken down to a lesser extent, which might affect the absorption of nutrients. As a result, pepsinogen is vital to the digestive process and must be functioning properly.
Hence, If a mutation stops the ability for pepsinogen to respond to the presence of pepsin, pepsin production will be reduced.
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what is the correct equation for cellular respiration showing the reactants on the left of the equal sign and products on the right of the equal sign?
The correct equation for cellular respiration showing the reactants on the left of the equal sign and products on the right of the equal sign is: C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP.
Cellular respiration is a process that occurs in the cells of living organisms in order to release energy from food molecules (such as glucose). There are three main stages of cellular respiration: glycolysis, the Krebs cycle, and oxidative phosphorylation.
During these stages, glucose is broken down into carbon dioxide and water, and ATP (adenosine triphosphate) is produced as an energy source for the cell. The balanced equation for cellular respiration shows that glucose and oxygen react to produce carbon dioxide, water, and energy (in the form of ATP).
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Marine life in the oceans are an important source of atmospheric _______________.
Marine life in the oceans are an important source of atmospheric oxygen. Marine life refers to the plants, animals, and other organisms that inhabit the ocean or marine biome, and they provide various services such as food, oxygen, medicines, and recreation to humans.
Marine life is crucial to the ocean's functioning, and its diversity is due to the existence of unique organisms that cannot be found elsewhere.
Phytoplankton, which is a significant part of marine life, plays a crucial role in the global carbon cycle by serving as the foundation of many marine ecosystems and transporting carbon from the surface to the deep ocean when they die and sink.
Marine life is essential to mitigating climate change because the ocean absorbs approximately one-third of the carbon dioxide produced by human activities.
Marine life, particularly phytoplankton and seaweed, is responsible for producing roughly 70% of the Earth's oxygen, with land-based plants and trees producing the remaining 30%.
Phytoplankton use photosynthesis to produce oxygen by converting carbon dioxide and water into glucose and oxygen using light energy.
The oxygen produced by marine life is critical to the survival of humans and animals worldwide, and the ocean's oxygen supply is essential for the survival of marine life as well.
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what is significant about the flowers of amorphophallus titanum commonly known as the corpse flower
Amorphophallus titanum, also known as the "corpse flower," is noteworthy because of the size and odor of its flowers.
What is the corpse flower, and what makes it so special?The Amorphophallus titanum, also known as the "corpse flower," is notable for its large size and awful scent. The plant's stem can grow up to ten feet tall, with a single enormous leaf that can grow up to 20 feet long and 15 feet broad.The inflorescence (flower) is what makes the plant so remarkable.
The Amorphophallus titanium's flowers can grow to be up to ten feet tall, making them one of the world's largest. Despite their size, they aren't particularly colorful; rather, they're a dull reddish-brown. The flowers also emit a foul odor that some people compare to rotting flesh. This odor attracts the pollinators of the plant, which are mostly carrion flies and beetles.This plant is very rare in the wild, and it only blooms once every several years. When it does, it becomes a major event, with people traveling from all over to see and smell it.
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in the binomial name for the common fruit fly, drosophila melanogaster, which two taxonomic levels are provided in the name?
The binomial name for the common fruit fly, Drosophila melanogaster, provides two taxonomic levels in the name: the genus and species.
Binomial nomenclature is the system of naming species with a scientific name consisting of two parts: a generic name and a specific name, which together define the species.
The International Code of Nomenclature for algae, fungi, and plants (ICN), which applies to all organisms traditionally treated as plants, also allows for names to be assigned to taxonomic ranks other than species. However, it is customary for the binomial system to be used in all ranks, including the rank of species.
Binomial names, often known as scientific names, consist of two parts: the first part is the generic name or genus name, which identifies the genus to which the species belongs, and the second part is the specific name or species epithet, which identifies the species within the genus.
The word "binomial" comes from the Latin "bi-" meaning "two" and "nomen" meaning "name."
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as you are working on a sketch of a dicot leaf for your botany lab report, you want to be sure that you add specific details about the mesophyll. what should you be sure to show in palisade, but not spongy, mesophyll?
When working on a sketch of a dicot leaf for your botany lab report, you should be sure to show the following details in the palisade, but not the spongy mesophyll: longer cells, more tightly packed together, and more chloroplasts per cell.
The mesophyll is the internal tissue of a leaf that consists of chloroplast-containing parenchyma cells. The mesophyll is divided into two layers: the upper palisade layer and the lower spongy layer. The chloroplasts in the mesophyll are responsible for photosynthesis, which is the process that produces glucose from carbon dioxide and water in the presence of light energy.
The mesophyll in a dicot leaf is made up of two different layers: the palisade mesophyll and the spongy mesophyll. Palisade mesophyll is the layer of cells located directly under the upper epidermis of a dicot leaf. These cells are long and tightly packed, with more chloroplasts per cell than the spongy mesophyll. As a result, palisade mesophyll cells are more efficient at absorbing light energy and performing photosynthesis.
The spongy mesophyll is the lower layer of mesophyll cells in a dicot leaf. The cells in this layer are more loosely packed than those in the palisade mesophyll, and they have fewer chloroplasts per cell. Spongy mesophyll cells also have large air spaces between them, allowing for gas exchange and the movement of water vapor out of the leaf.
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in a pure bred variety of mendel's pea plants, what traits would the offspring of a white-flowered pea plant with yellow seed color have?
The offspring of a white-flowered pea plant with yellow seed color will have both white flowers and yellow seeds.
The traits that the offspring of a white-flowered pea plant with yellow seed color would inherit would be determined by the traits of the purebred variety of Mendel's pea plant. The phenotype and genotype of the offspring would depend on the dominant and recessive alleles of the parental plants.
In the cross, a white-flowered pea plant with yellow seed color is a homozygous recessive (yy), whereas the purebred variety of Mendel's pea plant is a homozygous dominant (YY).The cross between a homozygous recessive and a homozygous dominant produces offspring with the same genotype but different phenotypes.
The F1 generation, in this case, would be heterozygous (Yy) with a dominant yellow seed color and white flowers because yellow seed color is dominant and white flower color is recessive. Thus, the offspring of a white-flowered pea plant with yellow seed color would have yellow seeds and white flowers (Yy) because yellow seed color is dominant and white flower color is recessive.
The F2 generation can result in a variety of possible phenotypes and genotypes when the F1 generation is allowed to self-fertilize.
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onsider an ecosystem where all the fungi not involved in mycorrhizae are eliminated. how would this affect nitrogen intake by plants?
Removing all fungi not involved in mycorrhizae from an ecosystem would have a significant impact on nitrogen intake by plants. Without the symbiotic relationship between fungi and plant roots, plants would not be able to access as much nitrogen from the soil.
Without the mycorrhizal fungi, the plants would be unable to access as much nitrogen from the soil. This would reduce plant growth, and would also lead to reduced nutrient availability for other organisms in the ecosystem.
An ecosystem where all the fungi not involved in mycorrhizae are eliminated would adversely affect nitrogen intake by plants. Below is an explanation regarding this: Nitrogen fixation occurs naturally through legumes such as beans, peas, and soybeans. Nitrogen from the atmosphere is taken in by these crops and converted into ammonia by nitrogen-fixing bacteria that live in their root nodules. The ammonia is then converted to amino acids, which the plant employs for protein synthesis.
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In the Gulf of Mexico, there is a large area off the coast of Louisiana that cannot support most marine life. In this area, fresh water from the Mississippi River carries excess phosphorus and nitrogen from lawn care and agriculture into the Gulf of Mexico. Algae in the water use these nutrients to grow rapidly, creating algal blooms in the water. When the algae die, they sink to the bottom of the Gulf, where bacteria use much of the oxygen in the water to decompose the algae.
Dissolved Oxygen Levels in Gulf of Mexico Dead Zone
map showing dissolved oxygen levels in water, with areas ranging from 0 mg/L to about 6mg/L
Image courtesy of NOAA
Marine organisms trying to live in the water may not get enough oxygen to survive. Based on this description, which of the following is true?
A.
Nonliving factors, such as the amount of nutrients available, significantly affect the survival of organisms in their environment.
B.
Living factors, such as the number of producers present, play the largest role in the survival of organisms in an ecosystem.
C.
The supply of any nonliving factor supports or limits growth of all organisms in an ecosystem in the same way.
D.
The number of organisms of each type in an ecosystem depends on living factors but not on nonliving factors.
i dont know the answer??
Answer:
A. Nonliving factors, such as the amount of nutrients available, significantly affect the survival of organisms in their environment.
Explanation:
The death of the algae kills oxygen, both are non-living factors
starting with the arrival of an action potential at the axon terminal of a motor neuron, which is the correct order of events?
Starting with all the first arrival of an action Sequence potential at the axon terminal for an motor neuron, 1,3,4,2,5 is the correct order of events.
A neuron can interact with muscle cells or other neurons by migrating along its membrane to produce an electrical signal known as an action potential. The axon terminal of the motor neuron receives an action potential. Neurotransmitters are released into the synaptic cleft as a result of exocytosis.
Neurotransmitter binding causes ligand-gated ion channels to open, enabling sodium ions to enter. Event Sequence:
1. An action with the potential to reaches the motor neuron's at the axon terminal.
2. Myosin heads join with actin and produce a powerful contraction
3. Neurotransmitter binding causes ligand-gated ion channels to open, enabling an inflow of sodium ions.
4. Exocytosis allows neurotransmitters to enter the synaptic cleft.
5. The release of calcium ions is initiated by the muscular action potential.
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Correct Question:
Starting with the arrival of an action potential at the axon terminal of a motor neuron, which is the correct order of events?
1. Action potential reaches the axon terminal of the motor neuron.
2. Myosin heads bind to actin and perform a power stroke
3. The binding of neurotransmitters opens ligand-gated ion channels, allowing an influx of sodium ions
4. Neurotransmitters are released into the synaptic cleft via exocytosis.
5. The muscle action potential triggers the release of calcium ions.