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
uranmaximum [27]
3 years ago
11

What has to happen before mitosis begins?

Biology
1 answer:
Leokris [45]3 years ago
5 0

Mitosis is simply a stage in a cells life cycle, which could be broken down further into stages of mitosis. The rest (so not mitosis) is know as Interphase and is where the cell does its normal function, so if it's the cell is in a region of muscle it would contract/relax as normal etc.

Immediately before mitosis (or M phase) is what's know as G2 phase, where the G stands for growth and is where particular gene pathways are expressed to promote growth of the volume of DNA (chromosomes are duplicated, so from 46 to 92). At the end of this stage is a checking process where the DNA is scrutinised for any errors, if all is okay then the cell can proceed to mitosis, if not then the process is stopped so that errors in copying the DNA can be fixed. This is know as a restriction point and the cell must meet the requirements to pass. This is often seen as a way cells can prevent damage being replicated and therefore interfering with normal cell processes. When cells are cancerous they are able to override this and therefore divide and spread the damaged DNA.

You might be interested in
What is a stop codon​
storchak [24]

Answer:

In the genetic code, a stop codon (or termination codon) is a nucleotide triplet within messenger RNA that signals a termination of translation into protein

Explanation:

Proteins are based on polypeptides, which are unique sequences of amino acids. Most codons in messenger RNA (from DNA) correspond to the addition of an amino acid to a growing polypeptide chain, which may ultimately become a protein. Stop codons signal the termination of this process by binding release factors, which cause the ribosomal subunits to disassociate, releasing the amino acid chain. While start codons need nearby sequences or initiation factors to start translation, a stop codon alone is sufficient to initiate termination.

4 0
3 years ago
Read 2 more answers
If two objects are moving at a constant speed with the same velocity, what will make the
Charra [1.4K]

Answer:

<em>The velocity can change by changing the direction</em>

Explanation:

If the direction changes, then the velocity changes even though the speed is constant. Hope this helps!

4 0
2 years ago
Mantle plumes are areas of hot, upwelling mantle and hot spots develops above these plumes as noted in the map above. Magma gene
harkovskaia [24]
The answer is C) extrusive igneous. This rock starts as magma, so you know it must be a type of igneous<span> rock. The question tells you that the rock forms when it is cooled by the water, so you know it is formed outside of the Earth's interior, therefore making it extrusive igneous rock. </span>
5 0
3 years ago
Which statement best describes an immune response? *
klemol [59]

Answer:

A

Explanation:

7 0
2 years ago
Read 2 more answers
I will give brainliest
seraphim [82]

Answer:

plant cells have chloroplasts and a cell wall. (they also have one large central vacuole.)

Explanation: Chloroplasts are found only in plant cells. Chloroplasts convert energy from the sun into sugar (glucose). The chloroplast is also where photosythesis happens in the plant cell. The cell wall is also only found in a plant cell. The cell wall protects and mantains the shape of the cell. And you don't have to put this one but the central vacuole is just one big vacuole in a plant cell that stores mainly water and nutrients since plant cells require more water to function, whereas in animal cells they have multiple small vacuoles.

8 0
2 years ago
Other questions:
  • Descrube 4 components of proper collection of soil
    5·1 answer
  • In a hypothetical population of 1,000 people, tests of blood-type genes show that 160 have the genotype aa, 480 have the genotyp
    10·1 answer
  • I don't usually ask questions for school, I'm just curious. Well, if you look up 'savant syndrome', you'll understand this bette
    11·1 answer
  • Small,rocky bodies that revolve around the sun are called
    5·2 answers
  • Pure gold is an example of a(n) _____.<br><br> element<br> compound<br> mixture<br> solution
    11·1 answer
  • Some types of algae live inside coral. The algae provide the coral with nutrients. The coral provides the algae with shelter. Wh
    7·2 answers
  • How is species interaction a factor in evolution? Use the ant and the acacia tree as an example.
    9·1 answer
  • Which solution is more diluted? Solution 1:
    14·1 answer
  • Select the density-dependent factors <br> pls i will mark brainliest
    11·2 answers
  • Which land biome is characterized by extremely cold temperatures, very dry and windy harsh
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!