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
Readme [11.4K]
3 years ago
12

Foreign cells that enter our body have unique cell surface proteins, known as ________, which stimulate our body's defense to at

tack.
Biology
2 answers:
Ugo [173]3 years ago
8 0
Foreign cells that enter our body have unique cell surface proteins, known as antigens, which stimulate our body's defence to attack.
Hope this helps
erma4kov [3.2K]3 years ago
7 0

Answer:

The answer will be antigens

You might be interested in
Describe the 5 steps in protein systhensis. In simple form.
stiv31 [10]

Answer:

Copy of one side of DNA strand is made

mRNA moves to cytoplasm, then ribosome.

mRNA goes through ribosome 3 bases at a time

transfer RNA (tRNA) matches up with the open DNA bases.

tRNA releases the amino acid at the top, which joins the chain of amino acids being produced

Explanation:

4 0
3 years ago
Read 2 more answers
Guys I need help with this
laila [671]

Answer:

I believe it's B, its been a while since I last studied cells so I might be wrong

Explanation:

5 0
3 years ago
Read 2 more answers
Explain why advanced age has an effect on a woman’s eggs, but not necessarily a man’s sperm.
atroni [7]

Answer:

Due to reduced rate of egg production and several disorders caused by hormonal imbalances

Explanation:

Women lose their fertility at the age of 45 while men are able to produce sperm throughout their life. The reasons however for this are not very clear but it has been found that the rate of production of egg decreases with the advancement of age of females. Also the quality of egg degrades thereby reducing the likelihood of an egg being genetically normal. A woman along with faces several disorders due to the hormonal imbalances and one of these disorders is PCOS, ovarian insufficiency etc., which lead to distorted pattern of menstrual cycle.

5 0
3 years ago
Explain how a recessive trait is passed onto offspring.
juin [17]
It can be passed down heck anything can be passed down it all has to do with your parent's genes
 
7 0
3 years ago
What structure is most important in forming the tetrads?
Vladimir79 [104]

Answer:

The correct answer will be option- synaptonemal complex.

Explanation:

The tetrad arrangement of the genetic material in an organism is mediated by a highly conserved structure known as the synaptonemal complex.  The synaptonemal complex is formed during the prophase I of the meiosis I which attaches the chromatin of the homologous chromosomes.

The synaptonemal complex is a proteinaceous structure which is formed by the two lateral ladders like elements with a central portion composed of the central element. The chromatin gets attached to the lateral elements while the central a portion bridge space between the two ladders thus help in the formation of the tetrad.

Thus, option- synaptonemal complex is the correct answer.

4 0
3 years ago
Other questions:
  • 1. Which one of these is not an example of intracellular communication?
    9·1 answer
  • What is an ecosystem?
    8·1 answer
  • 7. Potential energy is stored in ____________ __________.
    9·1 answer
  • Which of the following describes a rapidly expanding population?
    10·2 answers
  • The g1 phase of the cell cycle is characterized by
    7·1 answer
  • Suggest some method to<br>presevining forest habitan​
    9·1 answer
  • What role do you play in the food web?
    10·1 answer
  • 3. Species that are in danger of becoming extinct in the near future is known a. endangered species c. Exotic Species Species c.
    9·2 answers
  • Amphibians, such as frogs, have adapted to have thin, very permeable skin that is well supplied with blood vessels. How does thi
    6·1 answer
  • Can anyone explain capillary action in the circulatory system in simple terms?​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!