Process of DNA Replication

Q.

Does amitosis occur in bacteria?

Q.

A DNA strand is directly involved in the synthesis of all of the following except:

1. Proteins

2. DNA

3. mRNA

4. tRNA

Q. Match the following enzymes to their functions in replication of DNA.

1. Adding nucleotides
2. Joining DNA strands
3. Unwinds DNA
4. RNA primer synthesis

Q.

Match the following enzymes of DNA replication with their respective functions:
$\begin{array}{cc}p.DNApolymerase& i.HelpsunziptheDNAdoublehelix\\ q.DNAligase& ii.SealsnicksbetweenOkazakifragments\\ r.DNAhelicase& iii.LaysRNAprimerstowhichpolymerasecanaddnucleotides\\ s.Primase& iv.Addsnucleotidestothefree{3}^{\prime }endofRNAprimers\end{array}$

1. p - i, q - ii, r - iii, s - iv

2. p - iii, q - i, r - ii, s - iv

3. p - iv, q - ii, r - i, s - iii

4. p - ii, q - iii, r - iv, s - i

Q.

Why should translation and transcription be tightly controlled?

Q. Which of the following enzymes are required for DNA replication?

1. DNA polymerase
2. RNA polymerase
3. DNA ligase
4. Helicase

Q.

Okazaki fragments are formed during:

1. Transduction

2. Transcription

3. Replication

4. Translation

Q. The leading strand is copied in a series of short fragments called Okazaki fragments

1. True
2. False

Q. The elongation of the DNA strand during DNA synthesis

1. progresses away from the replication fork
2. occurs in the 3’ to 5’ direction
3. depends on the action of RNA polymerase
4. depends on the action of DNA polymerase

Q. Match the following enzymes of DNA replication with their respective functions:
$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{p. DNA polymerase}& \text{i. Helps unzip the DNA double helix}\\ \text{q. DNA ligase}& \text{ii. Seals nicks between Okazaki fragments}\\ \text{r. DNA helicase}& \text{iii. Lays RNA primers to which polymerase can add nucleotides}\\ \text{s. Primase}& \text{iv. Adds nucleotides to the free 3' end of RNA primers}\end{array}$