Multiple Choice 48. Which of the following is NOT part of the core nucleosome? a
ID: 270677 • Letter: M
Question
Multiple Choice 48. Which of the following is NOT part of the core nucleosome? a) H2A b) H2B c)H1 d) H3 e) H4 True a, False b 49. Centromeres and telomeres encode special gene products. 50. Transposons and insertion sequences can "hop" throughout the genome. Matching 51. Okazaki fragments 52. DNA proofreading 53. DNA primase 54. DNA gyrase 55. continuous synthesis a. 35' exonuclease activity b. supercoil removal c. leading strand d. lagging strand e. RNA primer synthesis Multiple Choice 56. Usually transcription of a single given gene occurs from. 57. The poly(A) tails found in the 3' end of mRNAs are important for.. a) both DNA strands b) one DNA strand c) neither DNA strand a) mRNA stability b) DNA replication c) DNA repair d) telomere function e) Mendelian Inheritance Visual -Use the following diagram for questions 58-59. Solid circles represent amino acids. 5Explanation / Answer
Answer 48
Option C is correct i.e "H1 histone".
Explanation
Nucleosomes are the basic structural unit of chromatin and nucleosome contains a histone octamer that consists of two copies each of H2A , H2B , H3 and H4. H1 termed as linKer histone and is associated with linKer DNA.
Answer 49 [True - (a) and false - (b)]
Statement 1: Centromeres and telomeres encode special gene products : a (true)
Answer 50
Statement 1 : Transposons and insertion sequences can hop throughout the genome : a (true)
Explanation
Transposons are repeated DNA sequence interspersed at multiple sites throughout genome. Transposable elements that transpose to new sites directly as DNA are called transposons. These elements encode enzymes that can insert their sequences into new site in the genome is called transposition and insertion sequences are the part of trasposons. So insertion sequences can also hop throughout the genome.
Answer 56
Option B is correct i.e " One DNA strand".
Explanation
Transcription is a selective process. During transcription only one strand of the transcription unit (transcribed segment of DNA) is transcribed.
Answer 57
Option A is correct i.e " mRNA stability".
Explanation
Poly A tail have several functions:
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