Nucleosome core is made of:
Correct answer: D. H 2 A, H 2 B, H 3 and H 4
- A. H 1, H 2 A, H 2 B and H 3
- B. H 1, H 2 A, H 2 B, H 4
- C. H 1, H 2 A, H 2 B, H 3 and H 4
- D. H 2 A, H 2 B, H 3 and H 4
Explanation
The Nucleosome core or histone octamer is made up of two subunits, each of H2A, H2B, H3, and H4 histone proteins. It is about 710 nm in diameter, consisting of histones around which a DNA strand, about 120 base pairs long, is wrapped in chromosomes.
Last updated
About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
Practise Cell Structure and Function
2,478 free Cell Structure and Function MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
1000-2000 Okazaki fragment:
200 nucleotide + 8 histones:
2n= 16 in a primary spermatocyte, which is in the metaphase of first meiotic division. What shall be the total number of chromatids in each of the secondary spermatocytes?
A 10 nucleotide sequence i.e., RNA primer is constructed by:
A cell contains 8 chromosomes in its diploid state.When this cell undergoes meiosis, its daughter cells would contain: