Questions and answers for exam Preparation

MCQs

Total Questions : 62 | Page 1 of 7 pages

Question 1. The deliberate modifications of an organism's genetic information by directly changing its nucleic acid content is a subject matter of

genetic engineering
population genetics
microbiology
protein engineering

Discuss Question

Answer: Option A. -> genetic engineering
Answer: (a).genetic engineering

Question 2. Which of the following is obtained using processed mRNA molecules as a template?

rDNA
mDNA
cDNA
tDNA

Discuss Question

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

Question 3. What is the normal role of restriction endonucleases in bacterial cells?

To degrade the bacterial chromosome into small pieces during replication
To degrade invading phage DNA
To produce RNA primers for replication
All of the above

Discuss Question

Answer: Option B. -> To degrade invading phage DNA
Answer: (b).To degrade invading phage DNA

Question 4. Vectors are

molecules that degrade nucleic acids
molecules that help in replication
molecules that are able to covalently bond to and carry foreign DNA into cells
molecules that protect host cells from invasion by foreign DNA

Discuss Question

Answer: Option C. -> molecules that are able to covalently bond to and carry foreign DNA into cells
Answer: (c).molecules that are able to covalently bond to and carry foreign DNA into cells

Question 5. Electroporation is

the process of separating charged molecules through a gel maintained in an electric field
the process of combining foreign DNA to an electrically charged vector molecule
the application of high voltage pulses
the process of multiplication of the cells

Discuss Question

Answer: Option C. -> the application of high voltage pulses
Answer: (c).the application of high voltage pulses

Question 6. The piece of equipment, that introduces DNA into cells via DNA-coated microprojectiles is known as

laser
DNA probe
gene gun
inoculating needle

Discuss Question

Answer: Option C. -> gene gun
Answer: (c).gene gun

Question 7. An animal, that has gained new genetic information from the acquisition of foreign DNA, is considered as

a chimera
a transgenic animal
a vector
an enzyme that links DNA molecules

Discuss Question

Answer: Option B. -> a transgenic animal
Answer: (b).a transgenic animal

Question 8. The advantage of using DNA polymerases from thermophilic organisms in PCR is that

the DNA polymerases of these bacteria are much faster than those from other organisms
the DNA polymerases of these bacteria can withstand the high temperatures needed to denature the DNA strands
the DNA polymerases of these bacteria never make mistakes while replicating DNA
all of the above

Discuss Question

Answer: Option B. -> the DNA polymerases of these bacteria can withstand the high temperatures needed to denature the DNA strands
Answer: (b).the DNA polymerases of these bacteria can withstand the high temperatures needed to denature the DNA strands

Question 9. Which of the following is not commonly used as vector?