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
umka21 [38]
3 years ago
8

What causes formation of the fertilization envelope?

Biology
1 answer:
Sonja [21]3 years ago
4 0

Answer:

Sperm-egg interaction

Explanation:

The formation of fertilization envelope is well-studied on the model system- sea urchin. It has been shown that, the fertilization envelope is formed after the initial sperm-egg interaction from the egg surface vitelline envelope and the paracrystalline protein fraction which is derived from cortical granules. Secretion from cortical granules, prevents polyspermy.

You might be interested in
Why should we use CER method when approaching a question
marusya05 [52]

Answer:look at explanation

Explanation: you should use the CER method because you can find evidence for a question that you know is right and make a claim for the prompt, then provide a reasoning, therefore you get a full understanding of the question and so does the teacher.

6 0
3 years ago
What are the compounds needed for photosynthesis?
Firlakuza [10]
Sunlight, water, carbon dioxide, and chlorophyll  :)
8 0
3 years ago
The cell will enter the G1 phase. During this phase, proteins and nucleotides needed for DNA replication will be produced. Also,
kolbaska11 [484]

Answer and Explanation:

The interphase is the previous step before mitosis occurs. The interphase is conformed of the G1, S, and G2 stages.

  • During the G1 stage, it occurs a high intense biochemical activity. The cell duplicates its size, and the organelles and other molecules and cytoplasmatic structures duplicate too. Some structures, such as microtubules and actin filaments, are synthesized from zero. The endoplasmic reticulum increases in size and produces a membrane for the Golgi apparatus and vacuoles, lysosomes, and vesicles. During this stage, the pair of centrioles separate, and each centriole duplicates. Mitochondria and chloroplasts also replicate.

The stages S and G2 follow the G1. Once the whole interphase is completed, mitosis occurs.

  • During the S stage occurs the DNI replication process. At this point, it also occurs the synthesis of histones and other associated proteins. This is the only stage where the DNI molecule is replicated.
  • G2 stage is the final one before the cellular division. Here it begins the slow process of DNI condensation. Duplication of centrioles completes. Structures such as spindle fibers are assembled.
5 0
3 years ago
Definition for mutation
erma4kov [3.2K]

Answer:

Change

Explanation:

7 0
3 years ago
Which of the following are examples of what scientists can learn from studying fossils?
FrozenT [24]
The answer is a and c
7 0
2 years ago
Read 2 more answers
Other questions:
  • An emergency department client is diagnosed with a hip dislocation. The client's family is relieved that the client has not suff
    5·1 answer
  • This is a process by which substances are transported across cell membranes by means of protein carrier molecules.
    12·2 answers
  • What is happening to the visible light waves as they come into contact with bricks and what characteristics determine the behavi
    8·1 answer
  • The universe contains billions of galaxies, each of which contains billions of stars. Suppose you observed a galaxy through a te
    12·1 answer
  • The panda eating bamboo is an example of what life process
    5·2 answers
  • How do organisms store and use energy?
    8·2 answers
  • Science under modern classification systems, in what clade will you find birds?
    10·2 answers
  • How do the structures of the paramecium help it survive? Give specific examples.
    11·1 answer
  • Which of the following is true about budding? Check all that apply, *
    12·1 answer
  • Please i actually need help.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!