Aminoacylation of tRNA is essential for
replication of RNA
formation of peptide bond
splicing
initiation of transcription
initiation of transcription
B.
formation of peptide bond
Charging or aminoacylation of tRNA is, the process when tRNA specific for the amino acid forms aminoacyl. The amino acid is linked to 3' – OH and tRNA through its – COOH group. The tRNA complexed with amino acid is sometimes called charged tRNA. This process is essential for protein synthesis i.e. polypeptide formation through formation of peptide bonds between amino acids.
Match Column I with Column II and choose the correct option.
| Column I (Scientists) | Column II (Concept) |
| I. Taylor and colleagues | A. Lac operon |
| II. Hershey and Chase | B. DNA replicates semi-conservatively |
| III. Griffith | C. Transforming principle |
| IV. Jacob & Monod |
D. DNA is the genetic material E. Transcription |
I - B; II - E; III - A; IV - C
I - C; II - D; III - B; IV - A
I - B; II - D; III - C; IV - A
I - A; II - E; III - D; IV - B
I - A; II - E; III - D; IV - B
Read the following statements and choose the correct option:
I. RNA polymerase associates transiently with 'Rho' factor to initiate transcription.
II. In bacteria, transcription and translation takes place in the same compartment.
III. RNA polymerase I is responsible for transcription of tRNA.
IV. When hnRNA undergoes capping process, adenlyte residues are added at 3' end in a template independent manner.
V. hRNA is the precursor of mRNA.
II only is correct
II, III and V only are correct
III and IV only are correct
I and IV only are correct
I and IV only are correct
In the ribose of RNA, unlike DNA, every nucleotide residue has an additional
COOH group in the 2'position
OH group in the 5' position
OH group in the 2'position
Phosphate group in the 2' position
Phosphate group in the 2' position
Choose the correct statement.
Haploid content of human DNA is 4.6 × 106 bp.
A nitrogenous base is linked to pentose sugar through phosphodiester linkage
X-ray diffraction data of Maurice Wilkins and Rosalind Franklin was the basis of Watson and Crick's DNA model
DNA is an acidic substance was first identified by Watson and Crick
DNA is an acidic substance was first identified by Watson and Crick
The moiety present at the 5' end of ribose sugar in a polynucleotide is
OH
CH2
Phosphate
Adenine
Adenine
Physical association of genes on a chromosome is called
Repulsion
Linkage
Aneuploidy
Duplication
Duplication
Which property among these listed below is not a criteria for a molecule to act as a genetic material?
Generate its replica
Chemically and structurally stable
Mutate slowly to facilitate evolution
Express itself in the form of Mendelian characters
Express itself in the form of Mendelian characters
