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
spayn [35]
3 years ago
13

What are the chromosomes called when they look like Xs​

Biology
1 answer:
Marina86 [1]3 years ago
6 0

Answer:

I think you're referring to the Metaphase...

Explanation:

During Cell Division (or, rather before!) the DNA needs to be replicated. This normally is done by DNA Polymerase, and results in two identical double strands (the "Sister Chromatids".

These chromatids are held together at the Centromere, which will be the heart of the "X"-shape. After that the DNA is packed into Chromosomes by winding it around proteins called Histones. If I remember correctly there are 5 different Histones.

This "Zipping Up" makes the chromosomes more visible.

As the two sister chromatids are still connected, the result is the X-shaped Metaphase Chromosome....

You might be interested in
What do all of the organ systems in a human form?
Rashid [163]
Together organ systems make us healthy and living. 
8 0
3 years ago
PLEASE HELP ME !’
blsea [12.9K]

Answer:

C. Osmosis

Explanation:

Osmosis is the net movement of solvent molecules, usually water, from a region of lower solute concentration to a region of higher solute concentration through a partially permeable membrane. Osmosis is a very useful for moving materials in and out of the cell.

Solutions are mixtures of solutes and solvents. The main aim of osmosis is for all the mixture part to be uniform and the solvent equally dispersed to all the part of the solution.

Osmosis is controlled to a large extent by concentration gradient.

Diffusion on the otherhand is the movement of molecules of a substance from one position to another.

Facilitated diffusion and active transport are just mechanisms for transport within a cell or a body.

4 0
3 years ago
Read 2 more answers
In your opinion, do you believe that humans are impacting Earth’s crust through fossil fuel extraction? Why or why not?
Ludmilka [50]
Yes because they are helpful to the earth
8 0
3 years ago
Part 1: What is the difference between the atmospheres of Mercury and Earth?
Sunny_sXe [5.5K]

Answer:

The difference would be that Mercury has a denser, warmer atmosphere and Earth has a not that dense and gassy atmosphere. The Earth's atmosphere also has a lot of layers while Mercury's doesn't. Those would be the reasons for them both being different. Hope this helped!

Explanation:

4 0
3 years ago
you eat a delicious Chinese take out dinner. your body stores the fat from your meal in the form of. LOOK AT THE ATTACHMENT
Marina86 [1]
I’m like 97% sure it’s triglyceride
3 0
3 years ago
Other questions:
  • An ancient Greek physician believed performing lobotomies helped release inner spirits that caused mental illness. Please select
    5·2 answers
  • What is the average life expectancy for someone with HIV? Does life expectancy differ around the globe?
    12·1 answer
  • How many genders are there?
    9·2 answers
  • Given the nucleotide sequences below, what type of mutation has occurred?
    13·1 answer
  • Which procedure uses a CT scan to pinpoint the location of a mass in three dimensions and guide the biopsy needle?
    10·2 answers
  • During photosynthesis, plant leaves take in carbon dioxide through what in their leaves?
    6·1 answer
  • 9. Why is the equilibrium wage for doctors high?
    7·1 answer
  • a. Why was it important in this case to identify Salmonella Typhi in the feces of the restaurant worker?​
    13·1 answer
  • The type of sugar found in the Blood is called what​
    10·2 answers
  • Cardinals reproduce sexually. Many types of fungi can reproduce asexually by producing spores. A fungus does not need to _______
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!