Question Bank No: 1

1. The segment of DNA which acts as the instrumental manual for the synthesis of the protein is

 a)Nucleoside
 b)Nucleotide
 c)Ribose
 d)Gene

2. Translation refers to the process of polymerisation of amina acids to form _____

 a)Backbone
 b)Ribosome
 c)Polypeptide
 d)Single codon

3. DNA or RNA segment tagged with a radioactive molecules is called

 a)Plasmid
 b)Vector
 c)Probe
 d)Clone

4. There are _____ subunits that make up a nucleotide?

 a)One
 b)Two
 c)Three
 d)Four

5. Removal of introns and joining the exons in a defined order in a transcription unit is called

 a)Capping
 b)Splicing
 c)Tailing
 d)Transformation

6. The site of translation(protein synthesis) is

 a)Mitochondria
 b)Ribosomes
 c)Nucleus
 d)None of these

7. Which of the following is structural subunit of DNA?

 a)Protein
 b)Carbohydrate
 c)RNA
 d)Nucleotides

8. The segments of DNA, capable of moving from one location to another are

 a)Introns
 b)Transposons
 c)Exons
 d)Operons

9. _____ occurs in RNA instead of the nitrogenous base thymine found in DNA

 a)Uracil
 b)Cytosine
 c)Guanine
 d)Ribose

10. DNA is a polymer made of

 a)Amino acids
 b)Fats
 c)Sugars
 d)Nucleotides

11. DNA sequence that code for protein are known as

 a)Introns
 b)Exons
 c)Control regions
 d)Intervening sequences

12. Okazaki is known for his contribution to the understanding of

 a)Transcription
 b)Translation
 c)DNA-replication
 d)Mutation

13. The primary control of gene expression takes place at the level of

 a)Translation
 b)Transcrption
 c)DNA-replication
 d)None of the above

14. HIV is classified as a retrovirus because its genetic information is carried in

 a)DNA instead of RNA
 b)DNA
 c)RNA instead of DNA
 d)protein coat

15. The organelles in the cell where protein synthesis occurs are_____

 a)Ribosomes
 b)Endoplasmic reticulum
 c)Nucleus
 d)mRNA

16. RNA polymerase is only capable of catalyzing the process of____

 a)Termination
 b)Elongation
 c)Initiation
 d)All of the above

17. In history of bilogy, human genome project led to the development of?

 a)Bioinformatics
 b)Biosystematics
 c)Biotechnology
 d)Biomonitoring

18. RNA molecules that act as enzymes are called_____

 a)Polymerase
 b)Ribozymes
 c)Transcriptase
 d)Both (A) and (B)

19. The one aspect which is not a salient feature of genetic code, is its being

 a)Specific
 b)Degenerate
 c)Ambiguous
 d)Universal

20. Repressor proteins are coded for by ______ genes.

 a)Structural
 b)Operator
 c)Promoter
 d)Regulator

21. If the total amount of adenine and thymine in a double-stranded DNA is 45%, the amount of guanine in this DNA will be

 a)22.5%
 b)27.5%
 c)45%
 d)55%

22. Enzymes called _____ add complementary nucleotides, floating inside the nucleus.

 a)DNA polymerase
 b)DNA synthetase
 c)Lipoprotein lipase
 d)None of these

23. Satellite DNA is useful tool in

 a)Genetic engineering
 b)Organ transplantation
 c)Sex determination
 d)Forensic science

24. DNA is made of two chains that twist about one another in the shape of a

 a)Broken ladder
 b)Straight ladder
 c)Straight spiral
 d)Double helix