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
dusya [7]
3 years ago
8

DNA within the cell is wrapped around nucleosomes to form chromatin. When chromatin is in the form of a 30 nm fibril, how many c

opies of H1 and H2A histone proteins would be found in a stretch of chromatin containing 20 nucleosomes?
a. 40 H1, 20 H2A
b. 20 H1, 40 H2A
c. 40 H1, 40 H2A
d. 10 H1, 30 H2A
e. 20 H1, 20 H2A
Biology
1 answer:
vodomira [7]3 years ago
8 0

Answer:

The correct answer is option b. "20 H1, 40 H2A".

Explanation:

Chromatin is a complex that protects and condenses the genetic material comprised of DNA and proteins. When chromatin is in the form of a 30 nm fibril, nucleosomes have a regular positioning along the DNA. This means that each nucleosome is associated with a single H1 molecule. Therefore a chromatin containing 20 nucleosomes will have 20 copies of H1 and 40 copies of H2A, because each nucleosome has 2 copies of the core histone H2A.

You might be interested in
Which cycle involves a gas moving from the atmosphere moving directly into
Taya2010 [7]

Answer:

B. The carbon cycle

Explanation:

In the carbon cycle, carbon in the atmosphere is absorbed into plants, where the plants use photosynthesis to convert that carbon into oxygen and energy for themselves. Neither of the other cycles involves a plant taking in a gas directly from the atmosphere.

Hopefully this was helpful! :)

5 0
3 years ago
Which best matches the description with the genetic material?
Ulleksa [173]
DNA is the main type of genetic material found in a cell. In addition, it is found in the nucleus of the cell, so (D) is correct. DNA in the nucleus is used in replication (through mitosis and meiosis) via daughter cells to continue cell growth.


7 0
3 years ago
The diagram below compares the amounts of common elements found in the
Lelechka [254]

Answer:

C. Oxygen & Hydrogen.

Explanation:

The body is made of 65% Oxygen, 18% Carbon, 10% Hydrogen, 3% Nitrogen, and 4% other elements.

3 0
3 years ago
Down
tigry1 [53]

Answer:

why is this even here?

Explanation:

5 0
3 years ago
Certain substances pass from the blood in the glomerular capillaries into the ultrafiltrate under normal circumstances. Other su
mafiozo [28]
Normal:
Glucose
Rbc
NaCl
Amino acid
Plasma

Abnormal:
Albumin (protein)
Wbc

Remember that only small molecules can pass from the blood in the glomerular capillaries and this is cause they have thin walls
6 0
3 years ago
Other questions:
  • "tamara has been reporting blindness and numbness in her hands but her doctors cannot find any physical or medical explanation f
    13·1 answer
  • What is one effective strategy used by political campaigns?
    8·2 answers
  • The stem is responsible for providing support to the plant. A is a type of stem that grows underground. It’s capable of asexual
    7·1 answer
  • In order for matter to recycle and return in the food chain shown here, what must be present at level A?
    12·2 answers
  • 3. chemical compound plants make out of sugars into fibers for structure<br> and support
    9·1 answer
  • Know as the coldest biomes? ​
    14·1 answer
  • The damp soil within a forest in which a mushroom grows is a...? Habitat ? Ecosystem? Community? Population?
    14·2 answers
  • Dr. Alexander Winemann is a ________ist who specializes in organic chemistry.
    15·1 answer
  • You have bacteria in your intestines that help you digest your food. Is your relationship with those bacteria a plus-plus, plus-
    12·1 answer
  • What would have the greatest kinetic energy?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!