Q. Which one of the following amino acids in proteins does not undergo phosphorylation?
✅ Correct Answer: (C)
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Molecular Biology and Genetics MCQs | Page - 5
Dear candidates you will find MCQ questions of Molecular Biology and Genetics here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. In eukaryotes, the ribosomal RNA genes are transcribed by
✅ Correct Answer: (C)
RNA polymerase I
Q. The repeat sequence of telomere in humans is
✅ Correct Answer: (B)
5'-TTAGGG-3'
Q. Protein P becomes functional upon phosphorylation of a serine residue, replacing this serine with . . . . . . . . will result in a phosphomimic mutant of P.
✅ Correct Answer: (B)
Aspartic acid
Q. The RNA primer synthesized during the replication process in bacteria is removed by
✅ Correct Answer: (C)
DNA polymerase I
Q. The term 'protein splicing' refers to
✅ Correct Answer: (C)
Removal of intervening protein sequences from the translated protein
Q. A dioecious plant has XX sexual genotype for female and XY for male. After double fertilization, what would be the genotype of the embryos and endosperms?
✅ Correct Answer: (D)
50% ovules will have XXX endosperm and XX embryo, while the other 50% will have XXY endosperm and XY embryo
Q. An in vitro translation system can synthesize peptides in all three reading frames of the RNA template. When 5' - UCUCUCUC-(UC)n-UCUCUCUC - 3' was used as the template in this in vitro translation system, the synthesized peptides contained 50% each of serine and leucine. When 5' - CCUCCUCCU-(CCU)n-CCUCCU - 3' was used as the template, the synthesized peptides contained 33.3% each of serine, leucine, and proline. Deduce the codon for proline.
✅ Correct Answer: (C)
CCU
Q. During protein synthesis, tRNAs are not involved in
✅ Correct Answer: (D)
Termination
Q. If the nucleotide composition (%) of a viral genome is A = 10, U = 20, C = 40 and G = 30, which one of the following is this genome?
✅ Correct Answer: (B)
Single stranded RNA
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