Questions and answers for exam Preparation

MCQs

Total Questions : 241 | Page 9 of 25 pages

Question 81. The plasmids can be eliminated from a cell by the process known as

curing
breaking
fixing
expulsion

Discuss Question

Answer: Option A. -> curing
Answer: (a).curing

Question 82. Recombination of virus genomes occurs

by transduction
by transription
simultaneous infection of a host cell by two viruses with homologous chromosomes
by transformation

Discuss Question

Answer: Option C. -> simultaneous infection of a host cell by two viruses with homologous chromosomes
Answer: (c).simultaneous infection of a host cell by two viruses with homologous chromosomes

Question 83. The type of recombination that commonly occurs between a pair of homologous DNA sequences is,

mutagenic recombination
site-specific recombination
replicative recombination
general recombination

Discuss Question

Answer: Option D. -> general recombination
Answer: (d).general recombination

Question 84. In lysogeny,

a bacteriophage transfers bacterial DNA
bacteria take up double stranded DNA from the environment
DNA-degrading enzymes in the extracellular medium would stop the process
a bacteriophage genome is integrated into the bacterial genome

Discuss Question

Answer: Option D. -> a bacteriophage genome is integrated into the bacterial genome
Answer: (d).a bacteriophage genome is integrated into the bacterial genome

Question 85. A microarray differs from a gene fusion in that, it

carries DNA segments from many different genes
is not constructed by cloning
gives direct measurement of mRNA level
all of the above

Discuss Question

Answer: Option D. -> all of the above
Answer: (d).all of the above

Question 86. Which of the following statement describes plasmids?

Another name for a protoplast
A complex membrane structure that covers the chromosome of bacteria
Small, circular DNA molecules that can exist independently of chromosomes commonly found in bacteria
None of the above

Discuss Question

Answer: Option C. -> Small, circular DNA molecules that can exist independently of chromosomes commonly found in bacteria
Answer: (c).Small, circular DNA molecules that can exist independently of chromosomes commonly found in bacteria

Question 87. Who discovered transposons (jumping genes)?

Abelson
Harvey
McClintock
Griffith

Discuss Question

Answer: Option C. -> McClintock
Answer: (c).McClintock

Question 88. F factor plasmids play a major role in

conjugation
replication
transduction
trasnscription

Discuss Question

Answer: Option A. -> conjugation
Answer: (a).conjugation

Question 89. Which of the following statement can describe horizontal transfer?

The synthesis of protein in RNA
The transmission of genetic information from one independent, mature organism to another
The transmission of genetic information from parent to offspring
The synthesis of RNA from a DNA template

Discuss Question

Answer: Option B. -> The transmission of genetic information from one independent, mature organism to another
Answer: (b).The transmission of genetic information from one independent, mature organism to another

Question 90. In DNA sequencing, the primer