Which of the following is not true for histones?
A. |
They are associated with the nucleosome. |
|
B. |
H1, H2, and H4 form the nucleosome core. |
|
C. |
They are found in the nucleus. |
|
D. |
H1 functions as a monomer. |
the DNA is wrapped around the histone octamer, the histone octamer consists of 2 copies of H2A, H2B , H3 and H4, the DNA wrapped around the histone octamer is called the nucleosome, the H1 is the linker, which is located outside the histone octamer, so H1 is not part of the nucleosome core. and H1 functions as a monomer.
so the answer is B) H1, H2, and H4 form the nucleosome core.
Which of the following is not true for histones? A. They are associated with the nucleosome....
Which does not describe eukaryotic histones in a nucleosome structure? A. A core histone plus a linker histone octamer B. A core histone octamer plus a linker histone C. A core histone octamer plus 2 linker histones D. A core histone nonamer E. A core histone heptamer plus a linker histone
QUESTION 1 A nucleosome consists of A. a cluster of histone proteins that are wrapped around the DNA double helix. B. two peptides each of histones H2A, H2B, H3 and H4, wrapped by the DNA double helix. the DNA polymerase complex and the Okazaki fragments of approximately 200 bases in C. length. D. clusters of ribosomal large subunits and small subunits bound to the DNA double helix. E. one of each of the 5 types (H1 - H4) of histone...
1. In assembling a nucleosome, normally the …(1) histone dimers first combine to form a tetramer, which then further combines with two … (2) histone dimers to form the octamer. A. 1: H1–H3; 2: H2A–H2B B. 1: H3–H4; 2: H2A–H2B C. 1: H2A–H2B; 2: H1–H3 D. 1: H2A–H2B; 2: H3–H4 E. 1: H1–H2; 2: H3–H4 2. There has been a mutation on several enzymes important in DNA replication. For each enzyme, discuss what the protein normally does and how the...
Which of the following is the core of histones that DNA wraps around? A) 2H2A B) 2H2B C) 2H3 D) 2H4 E) these all makeup of the core histones
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The classic “beads-on-a-string” structure is the most decondensed chromatin structure possible and is produced experimentally. Which chromatin components are not retained when this structure is generated? (a) linker DNA (b) nucleosome core particles (c) linker histones (d) core histones Another person asked the question and (a) was chosen as the answer but it had multiple thumbs down.
The following statement is true about nucleosome 1. contains 147 nucleotides 2. histone protein core is surrounded by dna 3. contains H2A 4. contains H2B 5. all of them are true
which if the following best describes the mechanism by which chromatin remodeling complexes loosen the dna wrapped around the core histones A) they chemical lie modify the DNa changing the affinity between the histones octaves and the DNA B) they use energy derived from ATP hydrolysis to change the relative position of the Dan and the core histone octamer C) they remove histone H1 from the linker DNA adjacent to the core histone octamer
Which of the following is not true of histone tails? They are capable of automodifications (they can modify themselves). They protrude between the two DNA strands that supercoil around the nucleosome. They experience changes in net charge, shape, and other properties of histones in response to modifications. They are recognized by acetylases and methylases
which of the following is/are TRUE? (Select ALL that are TRUE.) a) Lamin is an intermediate filament found in the nucleus, whereas keratin is an intermediate filament found in the cytoplasm of skin cells. b) The disease progeria, premature aging in humans, is caused by mutation of a keratin gene. c) When lamin is mutated, blisters form on the skin of mice because the skin cells are torn apart under stress. d) Intermediate filaments form from assembly of coiled-coil dimers...