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Marianna [84]
3 years ago
15

Why are surface antigens on sperm cells not recognized as “self,” and why do they require a blood-testis barrier to prevent anti

body formation?
Biology
1 answer:
alexira [117]3 years ago
4 0

Answer:

The definition has always been defined throughout the clarification portion below, as per the particular context.

Explanation:

  • Spermatozoa were also developed all through puberty. At the point of conception, those who aren't here. At either the moment of birth, the immune response develops itself and not itself. That implies because after establishing susceptibility to sperm cells are produced.  
  • That is why there is no self-recognition of surface antigens onto spermatozoa. To discourage antibody formation towards antigens onto sperm, the bloodstream testis response is characterized. It would protect sperm cell antigens from getting into contact with an infected person.  

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For most athletes, the recommended time during the yearly training cycle to begin restriction of energy intake to lose large amo
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6 0
3 years ago
What is it called when scientists examine how well other scientist follow the scientific method?
Phoenix [80]
I think the answer you are looking for is peer review.
3 0
3 years ago
True or false: Theoretically, it is possible (but very difficult) for a population to not evolve for a while.
Debora [2.8K]

It is true that it is possible for a population to not evolve for a while.

There is something called the Hardy-Weinberg theorem, which characterizes the distributions of genotype frequencies in populations that are not evolving.

There are 5 Hardy-Weinberg assumptions:

  • no mutation
  • random mating
  • no gene flow
  • infinite population size
  • and no selection (natural nor forced).

You can see that some of these are kinda extreme and really hard to get, but with approximations, we can work.

For example, instead of an "infinite population size" we have enough with a really large population, such that genetic drift is negligible.

Concluding, yes, it is possible (but really difficult) for a population to not evolve for a while (at least, in nature), as long as the 5 assumptions above are met.

If you want to learn more, you can read:

brainly.com/question/19431143

7 0
3 years ago
You observe a tissue under a microscope. There appears to be a lumen on one side of the tissue. Lining this lumen is a single la
Papessa [141]

Answer:

Explanation:

So if there are lumen, there are class B skin. Therefore, with our connecting brain, we can infer that it's obvious what projection it makes. One like the monster effect, to us it is disturbed.

To summarize, they are packed tightly, within class B (known as dead-zone skin). In that, we have our shoebox. That shoebox tissue is known as shatire tissue.

4 0
3 years ago
What happens to the volume of a gas if the temperature is
expeople1 [14]

Answer:

The volume will decrease.

Explanation:

Volume of gas is directly proportional to temperature. So if temperature decrease, volume will also decrease.

(Correct me if I am wrong)

6 0
3 years ago
Read 2 more answers
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