1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
aleksandrvk [35]
3 years ago
14

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:
qaws [65]3 years ago
6 0

Answer: Sperm cells are recognised as foreign cells by the immune system and requires blood testis barrier to prevent antibody formation.

Explanation:

Shortly after birth, the immune system of an individual starts to recognize the surface antigens of its body cells as 'self' and avoids forming an antibody against it. Spermatozoa (sperm cells) are formed at puberty, between the age of 10 and 14. Hence, the body immune system will recognise the antigen on the sperm cells as 'non-self' and stimulate antibodies against it. This is prevented by the blood testis barrier.

The blood testis barrier which are formed from the Sertoli cells at the seminiferous tubules helps in the isolation of the sperm cells and protects it from immune surveillance. This barrier also prevents sperm cells from coming in contact with blood.

You might be interested in
1. A muscle or skin cell is an example of a​
guajiro [1.7K]

Answer: a worm ahaha thanks for the points dummy

Explanation:

4 0
4 years ago
Which mechanoreceptor is located deeper in the skin and responds continuously to stimulation and is associated with perceiving s
Eva8 [605]

The mechanoreceptor that is located deeper in the skin and responds continuously to stimulation and is associated with perceiving stretching of the skin is called Ruffini corpuscle.

Mechanoreceptor is a sensory receptor that responds to mechanical pressure. They are connected with sensory neurons that convert this mechanical pressure into electrical signal. It is of four types-

1. Merkel corpuscles- detect pressure and roughness on skin.

2. Ruffini corpuscles- detect deep tension in skin, skin stretch.

3. Meissner corpuscles- perception of light touch and slip on skin.

4. Pacinian corpuscles or Vater-panician corpuscles- detect rapid vibrations.

When these receptors sense a stimuli they gets excited and generates an impulse that travels through the nerve cells into the brain.

To learn more about Mechanoreceptor here

brainly.com/question/17947146

#SPJ4

3 0
2 years ago
Which pair is incorrectly matching polymer-monomer? nucleic acids - nucleotides proteins - amino acids lipids - monosaccharides
Andrew [12]

The pair that incorrectly matches polymer-monomer is lipids-monosaccharides (option C).

<h3>What is a monomer?</h3>

A monomer is a small molecule which can be covalently bonded to other monomers to form a polymer.

A polymer, on the other hand, is a large molecule made up of a chain of many monomeric units, formed by chemically bonding together.

The following are the monomer-polymer combination we have in nature;

  • Carbohydrates - simple sugar/monosaccharide
  • Protein - amino acid
  • Lipids - fatty acid
  • Nucleic acid - nucleotide

Therefore, the pair that incorrectly matches polymer-monomer is lipids-monosaccharides.

Learn more about monomer at: brainly.com/question/18784783

#SPJ1

6 0
2 years ago
Soil erosion is a problem that is caused by many different factors. What can humans do to prevent soil erosion? To address this
sergiy2304 [10]

Answer:

yes

Explanation:

4 0
3 years ago
There are three questions:
salantis [7]

Answer:

B,C,A

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • WILLLGIVE A BRAINLEST
    7·2 answers
  • Which of the following processes does the body NOT use protein to perform?
    9·1 answer
  • In most energy sources, such as fossil fuels, where is the energy originally derived from?
    10·2 answers
  • Which of the following is the best description of an adoption​
    14·1 answer
  • Which drug when administered will reduce some of the effects of opiods?
    6·1 answer
  • hypothesize why the thickness of seafloor sediments increases with increasing distance from the mid-ocean ridge
    8·1 answer
  • Sketch a replication fork of bacterial DNA in which one strand is being replicated discontinuously and the other is being replic
    11·1 answer
  • The countercurrent heat exchanger that prevents arterial blood from overheating the testes is the ________
    14·1 answer
  • If you were given a 3D microscope to use for photography, which object(s) would you most want to photograph? Why?
    8·1 answer
  • How does science impact your life everyday? Would you choose a career in science and why?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!