answer.
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
alex41 [277]
2 years ago
3

In order to allow gene expression, histone modifying enzymes interact with core histones to modulate their affinity for the DNA

and/or other histones, so that specific sequences can be exposed to allow for transcription. From the list below, choose all of the statements that are true.
A) the 'tails' of core histones are an important site for covalent modifications by histone modifying enzymes
B) Histones can be modified in a variety of ways, including methylation, acetylation and phosphorylation.
C) Histones modifications are binary, meaning that modifcations will turn the histone 'on' or 'off'.
D) Histone modifying enzymes can slide the core histones along the DNA without removing it.
E) The H1 histone is sometimes removed, to help expose the DNA for transcription
Biology
1 answer:
Butoxors [25]2 years ago
5 0

Answer:

A, B, C and D are correct

Explanation:

The statement E is not correct because the Histone H1 does not form the histone octamer that is associated with DNA to form the nucleosomes. The histones in the nucleosome are H2A, H2B, H3 and H4.

The function of H1 is to act as a linker between nucleosomes in the chromatin fiber.

You might be interested in
Assume that a particular human cell is examined under a microscope, and it contains 22 autosomes and a Y chromosome. This cell i
frez [133]

Answer:

A sperm cell

Explanation:

A diploid cell has 46 chromosomes which is normally signified by somatic cells. Germ cells or gametes are haploid cells therefore they contain only 23 chromosomes. Male gamete contains 22 autosomes and one sex chromosome. That sex chromosome can be X or Y.

Female gamete does not have Y chromosome as a sex chromosome, it has only X chromosome as a sex chromosome. So Y chromosome in a human cell which have 22 autosomes determines that it is a male gametic cell or a sperm cell. Sperm cells that have a Y chromosome if fuses with female gamete produce male offspring(XY).  

So the correct answer is- a sperm cell.

5 0
2 years ago
Which two examples may be converted into fossil fuel after being buried under pressure for a long period of time
mamaluj [8]
Used cans and plants 
7 0
2 years ago
Read 2 more answers
Photosynthetic algae create sugars that will eventually be broken down during which process
Leya [2.2K]
The breaking down of sugars is called glycolysis. The prefix glyco- means sugar, and the suffix -lysis means breaking down. It's part of a three-step process in respiration, the other two is The Krebs Cycle and Electron Transport Phosphorylation. In the process of glycolysis, 2 ATP and 2 NADH are produced.
4 0
2 years ago
A researcher claims that genetic variation provides organisms with the ability to survive and reproduce in different environment
Igoryamba

Answer:

The researcher's claim is in the same way of the observation made because from it it is inferred that in a population of bacteria with genetic variation, in which some of them have plasmids and others do not, the population survives because those bacteria with plasmids are resistant to antibiotics, if for example there were only bacteria without plasmids all bacteria would die when using antibiotics so this is an example that genetic diversity is an evolutionary advantage

5 0
2 years ago
Read 2 more answers
During eukaryotic transcription, an RNA molecule is formed that is A. complementary to both strands of DNA.. B. identical to an
Marianna [84]
I believe the correct response would be D. Complementary to part of one strand of DNA.
5 0
2 years ago
Read 2 more answers
Other questions:
  • An advantage associated with the Darrieus rotor is that it _____.
    14·2 answers
  • Q1 Describe how the human genome project has been extended.
    9·1 answer
  • If the Oort cloud contains 1012 comets, and ten new comets are discovered coming close to the Sun each year, what percentage of
    5·1 answer
  • In general, a signal transmitted via phosphorylation of a series of proteins A) brings a conformational change to each protein.
    9·1 answer
  • in contrast to moss vascular plants such as ferns have a dominant sporophyte. provide two advantages of having a dominant sporop
    10·2 answers
  • Sort the characteristics as belonging to the first half of the pathway that requires energy or to the second half of the pathway
    6·1 answer
  • A glacier recedes and exposes bare rock. Which of the following will most likely occur next? A. The bare rock will quickly break
    12·1 answer
  • Which part of Earth most likely has the highest albedo value?
    7·2 answers
  • Sheila weighs 60 kg and is riding a bike. Her momentum on the bike is 340 kg • m/s. The bike hits a rock, which stops it complet
    15·2 answers
  • use the samples; diamond, dolomite, gneiss, and chalk and provide your analysis of composition and identification based on their
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!