Answer: 46
Explanation: 46 chromosomes are present in the cell before the start of meiosis.
The number of chromosomes that are present in the cell before the start of meiosis is 46. Because the total number of chromosomes in a human cell is 46.
What are chromosomes?Chromosomes are the thread-like structure present in pairs in all organisms. They are present inside the nucleus, and contain genes and DNA in them, and are responsible for the traits of an organism.
Meiosis is a process completed in two stages, and each contains four phases. It occurs in the germ cells, divides the cell into four cells, and reduces the number of chromosomes.
The number of chromosomes in humans is 46, 23 in pairs. Before meiosis, the number of chromosomes will be 46 after Meiosis the number reduces.
Thus, there are 46 chromosomes in the cell prior to the onset of meiosis.
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PLEASE HELPP
Question 2 (Multiple Choice Worth 2 points)
(06.02 MC)
Which of the following describes the correct order of energy conversions necessary to form electricity from wind?
O Wind Heat - Kinetic - Electric
O Wind Kinetic - Heat - Electric
O Wind Heat - Electric
O Wind - Khetic Electric
Answer:
Wind-Kinetic-Electric
Hi, I want to know what tract means in biology. Pls, elaborate on that.
Answer:
Tract is the system of body parts , they perform functions together .
Explanation:
A Scientific tract , designed for instruction and entertainment, and adapted to schools, lyceums and families.
question 11: After conducting research, does your conclusion need revision? why? support your revision with evidence from literature.
Works cited:
Yes, after conducting research, your conclusion needs revision. It is done to diminish the chances of mistakes that unknowingly happens.
What do you mean by Research?Research may be defined as the invention of new understanding and the use of existing knowledge in an unexplored and creative way so as to induce new concepts, methodologies, and understandings.
After the research has been successfully completed, the observations should be discussed with a guide or colleagues to get their assurance.
If they found any issues with the methodology, outcome, and conclusion, they will ask you to modify all the valid corrections.
Do the same and minimize the level of mistakes and corrections as much as possible to obtain better results.
Therefore, after conducting research, your conclusion needs revision.
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Answer:
Research how human activity has affected ocean life. Find reliable sources (.org, .edu, .gov) that provide enough information to determine whether your paragraph requires revision. However, if your answer covers the same points and topics and has no grammatical issues, then it is not required.
Which of these describes passive immunity? A.It occurs on the binding sites of antibodies. B.It is immunity that occurs after your body recovers from an illness. C.It is immunity from by a vaccine. D.It is immunity transferred from a mother nursing baby.
Answer:
C
Explanation:
Becuase fom a vaccine you are recieving antibodies by another animal or human donor.
D is unlinkely since it describes how the mother is nursing the baby, so nothing directly mentioning of the baby recieving any antibodies. The other options also talk about how the body creates its own antibodies, which isn't passive immunity.
The graph shows the effect of temperature on the activity of an enzyme.
At what temperature is the enzyme producing the most product?
A 10°C
B 26°C
C 34°C
D 40°C
Animals exhibit innate behaviors after they exhibit learned behaviors.
False
True
PLEASE HELP MEEEEEE!!!!
Answer:
The answer to this question is D.
Explanation:
This is because it was affected by the wind because sand is very light. ALso, I already learned this stuff so I am kind of an expert ngl.
What is the smallest unit that can be said to be alive?.
Answer:
cells
All living things are made up of cells, which is the smallest unit that can be said to be alive. An organism may consist of one single cell (unicellular) or many different numbers and types of cells (multicellular).
Explanation:
Neurospora (bread mold) and Saccharomycetes (bakers yeast) are both fungi. Chickens and turkeys are both birds. What can you say about the inferred evolutionary relationships between the two birds compared to the relationship between the two fungi
By the comparison of nucleotide/amino acid sequences, it is possible to infer a lesser number of differences between birds and fungi.
What is sequence homo-logy?The term 'sequence homo-logy' makes reference to the similarity degree between nucleotide/amino acid sequences.
Sequence homo-logy is a feature strongly associated with a common evolutionary origin (ancestry).
The sequence homo-logy can be used to determine evolutionary relationships between species.
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Pasteur proved that microbes produced different byproducts. He found that when certain heterotrophic yeast were grown anaerobically they produced:
During his experiments, Pasteur found that when certain heterotrophic yeast were grown anaerobically they produced alcohol and carbon dioxide.
What is anaerobic respiration?Anaerobic respiration is a form of respiration where food molecules are broken in the absence of oxygen to release energy as well as other byproducts.
Anaerobic respiration in microorganisms such as bacteria and yeast produce energy, alcohol and carbon dioxide.
Therefore, Pasteur found that when certain heterotrophic yeast were grown anaerobically they produced alcohol and carbon dioxide.
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Which of the following determined that the conduct need not seriously affect an employee's psychological well-being or lead the employee to suffer injury to be considered harassment?
Bill of Fair Treatment
U.S. Supreme Court
Anti-Harassment Policy of 1999
U.S. Congress
Answer:
Anti-Harassment Policy of 1999
How much energy goes to the next trophic level in an energy pyramid?.
Answer:
10%
Explanation:
It is not a lot of energy but it is said to be at least 10% because the rest is lost through heat.
Which of the following is an example of non-consumptive water use?
A
water that enters a sewer system
B
water used for irrigation
C
water used in manufacturing processes
D
water used in food preparation
Answer:
A
water that enters a sewer system
Explanation:
Proteins and polysaccharides are polymers. These polymers are formed by dehydration synthesis. Which statement correctly identifies a difference in the structure of proteins and polysaccharides?
a) Only polysaccharides can be folded and twisted to very specific shapes.
b) Only polysaccharides are comprised of repeating units of cytosine, adenine, guanine, and thymine.
c) Only proteins can be large molecules with thousands of subunits.
d)Only proteins are formed from amino acids joined by peptide bonds.
Answer:
Only proteins are formed from amino acids joined by peptide bonds.
Answer:
D. Proteins only formed from amino acids with the help of peptide bond.
Explanation:
Polysaccharide are made up of long chain of monosaccharide (these are known as simple sugar like glucose). Polysaccharide are carbohydrates such as starch, glycogen and cellulose. Polysaccharide consist of oxygen, hydrogen and carbon molecules with the ratio of 1:2:1.
Proteins, there are 20 different types of amino acids are found in protein and playing important fundamental role in to determine the structure and function of the protein. Proteins are major structural element of the cell, they are working as a transporter helping in movement of the molecule inside and outside the cell. Proteins consist molecules of carbon, nitrogen, oxygen and hydrogen and these molecules are not present in a partial ratio.
3. What is the process of collecting insect samples? What challenges are
there in collecting samples of insects from human remains?
Answer:
1. Entomological evidence collection is the process of collecting evidence based on insect clues used in criminal investigations.
2.They look to get the temperature of the body. air and also look for the maggots.
Insects are used in forensic medico-legal purpose and study of this is called entomology.
When person dies the body starts to decompose by microorganism like bacteria and fungi followed by action of insects.
There are few stage of decomposition. There are many factors in which this process depend are body size, and weight , place where the body is buried ,clothing etc.
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Which of the following types of land and topography will have the highest runoff coefficient?
Gravel
Grassland
Forests
Wetlands
The type of land and topography that will have the highest runoff coefficient is Gravel.
What do you mean by Runoff coefficient?The Runoff coefficient may be defined as the proportion of the amount of water that is not absorbed by the surface to the total amount of water that tumbles during a rainstorm.
The runoff coefficient is higher for those areas which have low infiltration and high runoff. Forests, Wetlands, and Grasslands have low runoff coefficients.
Therefore, the type of land and topography that will have the highest runoff coefficient is Gravel.
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What can skeletal remains reveal about the identity of a person?.
Answer:
ancestry, stature, age, disease and any fatal injuries.
Explanation:
Ischemic cell damage is caused by a lack of blood flow, which deprives cells of Multiple choice question. A) sodium ions. B) potassium ions. C) oxygen. D) carbon dioxide. E) chloride ions.
Ischemic cell damage is caused usually due to blockage in the blood vessels and causes a lack of blood flow. It causes a shortage of oxygen which is needed for cellular reactions.
What is Ischemic cell damage?Usually, Ischemic cell damage is caused due to any blockage in the artery generally due to atherosclerosis.
Atherosclerosis causes the accumulation of plaque in the artery which is a hard and sticky substance made up of fat.
This plaque causes blockage and restricts the blood flow. It also causes the deprivation of oxygen to the cells.
Thus, the correct option is C.
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What feature distinguishes an arteriole from a venule in a systemic capillary network?.
Arteriole carries the oxygenated blood and the venules carry the deoxygenated blood. the deoxygenated blood is given back to heart and the oxygenated blood is taken from the heart as heart is the pumping organ of our human body.
What is arterioles and venules ?Arterioles are the smaller blood vessels coming out from arteries and the capillaries together forming a network that carries the oxygenated blood in the human body.
The venules are the smaller blood vessels and capillaries coming out from veins that carry the deoxygenated blood inside them in the system of human body.
Arterioles are located on the arterial side of the system.
Thus, arterioles carry the oxygenated blood and venules carry the deoxygenated blood.
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______ began to fuse to form helium.
Answer:
The answer is Two Protons.
Explanation:
Two Protons Began to fuse two form helium.
Which of the following imports has increased over the past 6 years? a. coal b. oil c. lumber d. all of the above please select the best answer from the choices provided a b c d
Answer:
A. ) Coal.Explanation:
Why has cost of coal importation increasedUnprecedented increase in demand of electricity due to revival of economy, heavy rains in coal-mining areas last month, increase in prices of imported coal and non-building of adequate coal stocks before the onset of monsoon are the main reasons behind depletion of coal stocks at power plants, a government source said.Why are imported coal prices increasing?A sharp uptick in both international and domestic coal prices due to the ongoing Russia-Ukraine conflict is set to increase input prices for independent power producers and power distribution companies. Higher coal prices have also pushed up spot power tariffs on the India Energy Exchange.Answer:
A. Coal
Explanation:
Edge 2022.
Suppose that of a cohort of 200 rats in a rat colony born in January, 160 are still alive at the start of March and 120 are still alive at the start of May. What is the survivorship up to the start of March
Survivorship is the probability that individuals from the original cohort (age 0) get to a certain age (age x). Survivorship up to the start of March is 0.8.
What is a life table?
It is a representation of life and death patterns in a cohort. It includes the probability for different organisms in the population to live, survive, reproduce or die.
It is composed of information provided by parameters like age structure, natality rate, and death rate per age concerning the whole population.
There are two types of life tables:
Horizontal life tableVertical life tableWhat is the horizontal life table?This is a representation of a cohort destiny, from the born moment to the death moment of all individuals, including survival and fecundity per age.
A cohort is a group of individuals of the same age that are incorporated into the population at the same time.
This table is based on different vital statistics. Among them, we can mention,
Number of individuals registered at a certain age, N(x)Number of individuals at initial age (recent born, seeds, propagule), N(0)Specific survivorship per age, l(x)Transition rate from one age to the next one, p(x)The proportion of the original cohort that dies during a certain age x, d(x)Specific mortality per age, q(x)
Specific survivorship per age, l(x), is the proportion of individuals from the original cohort that gets to survive reaching a certain age. It is the probability that a recent born gets to a certain age.
l(x) = N(x) / N(0)
Values must go from 0 to 1. By definition, when l(x) = 1, then X = 0
In the exposed example, we know that
N(0) = 200 rats ⇒ new bornsN(x) = 160 rats ⇒ three months individualsl(x) = N(x) / N(0)
l(x) = 160 / 200 = 0.8
Survivorship specific per age up to the start of March is 0.8 = 80%
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6. RNA receives information from DNA by
1 binding with a double helix as a third strand
2 matching with subunits of a single strand of
DNA
3 making an exact copy of the DNA molecule
4 accepting proteins through pores in the nu-
clear membrane
Answer:
2
Explanation:
because complementary RNA nucleotides bind with the template strand of DNA
A product of the metabolism of certain nucleic acid bases is.
Answer: Uric Acid
Explanation:
A product of the metabolism of certain nucleic acid bases is uric acid.
Which combining form means plaque or fatty substance?.
Answer:
Ather/o is the combined form means Plaque or Fatty Substances.
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What is the main type of weathering in deserts?
a. physical weathering
b. weathering by organic acids
c. chemical weathering
The two main types of weathering which occur in deserts are Mechanical weathering, which is the disintegration of a rock by mechanical forces that do not change the rock's chemical composition and Chemical weathering, which is the decomposition of a rock by the alteration of its chemical composition.
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Discuss the importance of a balanced diet.
Answer:
u need a healthy diet cause it gives u the nutrients and energy u need to survive. ur body is more prone to disease n infections if u dont have a balanced diet. immune system weakens if u eat nutrient-poor foods. also here's something i copy-pasted from a random website:
revents diseases and infections. When you eat the full range of vitamins, minerals and other nutrients you improve your immune system and your healthy diet may even help prevent diseases like cancer, heart disease, diabetes, and stroke.
Helps you control your weight. Most people at some point want to lose weight or gain weight – eating a balanced diet helps you control your weight and maintain it over time. It is not feasible to be on a weight-loss diet forever – a balanced diet is the only way to healthily control your weight in the long term.
Improves your mental health. Getting the right mix of nutrients can help to ease symptoms of depression and anxiety – looking after yourself by eating well is essential as you take steps to good mental health.
Good for growth. A balanced diet is crucial for children and adolescents. As the body grows it is important to receive the right nutrients so that cells are built and maintained and the body grows at the right pace.
Better skin and hair. A healthy balanced diet also improves your looks. Eating well contributes to healthy skin and hair and a “glow” that makes you look younger.
this isnt very science-y but i tried to help the best i could so this should give u starting off point. have a great day/night
Explanation:
9) Animals have ways to protect themselves and hide from predators. The squid
as a defensive or protective response.
A) uses stinging cells
B) borrows into the sand
C)releases a spray of ink
D) releases bad smelling chemicals
Answer:
C. Releases a spray of ink
Explanation:
This is pretty obvious as squids are known for spraying ink at organisms whenever they feel in danger.
Which energy producing process takes place in this organelle
Answer: chemical energy
Explanation:
Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
A gene is a section of DNA whose sequence encodes a particular protein, which is composed of amino acids.
a. True
b. False
Answer:
FALSE
Explanation:
"A strand of RNA is a section of DNA whose sequence encodes a particular protein, which is composed of amino acids.", is true.