1. Fertility factors are
a. Plasmids that contains genes for antibiotic resistance
b. Plasmids that contains genes for pathogenicity
c. Plasmids that contains genes for F factor
d. All of the above
2. Promoter is a site where,
a. DNA polymerase binds
b. Repressor binds
c. RNA polymerase binds
d. Inducer binds
3. _______________ enzyme forms RNA based on the information carried on DNA strand.
a. DNA polymerase
b. RNA polymerase
c. DNA helicase
d. A & C
4. Operator is a site where,
a. DNA polymerase binds
b. Repressor protein binds
c. RNA polymerase binds
d. DNA helicase binds
5. Mutation is defined as _________________.
a. A permanent change in DNA
b. A permanent change in RNA
c. A permanent change in protein
6. Lactose operon is induced when-
a. Glucose is absent
b. Lactose is absent
c. Lactose is present
d. A & c are true
e. All of the above
7. The following is a type of point mutation.
a. Insertion
b. Deletion
c. Substitution
d. All of the above
8. Silent mutation is where,
a. There is no change in protein sequence
b. There is no change in DNA sequence
c. There is no change in RNA sequence
d. All of the above
9. The following is true for Tryptophan operon.
a. A repressible operon
b. Operon contains genes that make tryptophan
c. Tryptophan is the repressor
d. All of the above
Matching questions: Match the phrases with appropriate terminologies that describe them.
10. Mechanism of synthesis of DNA
11. Process of making DNA
12. Continuous synthesis of DNA
13. Enzymes that keep strands of DNA separate during DNA synthesis
a. DNA Helicase
b. Semiconservative
c. Leading strand
d. Replication
14. Process of RNA synthesis
15. Carrier of amino acids for protein synthesis
16. A subunit of ribosomes
17. A set of rules used by cells to make proteins
18. A post transcriptional processing common to Eukaryotic cells
a. rRNA
b. tRNA
c. Transcription
d. Splicing
e. Genetic code