Musings of the Sundarman

From Gene to Protein: Twenty questions about Translation in Genetics

1. Why do dwarf peas fall to make their own gibberellins?

Ans. The dwarf peas are missing a key protein, as enzymes required for gibberellins synthesis.

2. The process by which DNA directs protein synthesis is called ________,which includes two stages called transcription and __________.

Ans. gene expressions , translation

3. Dwarf peas lacks the growth hormone called ________, which stimulates the normal elongation of stems.

Ans. gibberellins.

4. In a hereditary condition called alkaptonuria why the urine becomes black colour?

Ans. The urine becomes black colour because it contains the chemical alkapton, which darkens upon exposure to air.

5. Most nutritional mutants can survive on a complete growth medium, minimal medium supplemented with all 20 amino acid and a few other nutrients. (true/false)

Ans. true

6. Give two example of nonenzyme protein?

Ans. The structural protein of animal hair and hormone insulin.

7. Translaction is the actual synthesis of a polypeptide which occurs under the direction of _________.

ANS. m RNA

8. Each nucleotide along a DNA strand has A,G,C or T as its base and each nucleotide along a RNA strand has A,G,C or U as its base. (true/false)

Ans. true

9. The bridge between DNA and protein synthesis is the ______________

Ans. nucleic acid RNA.

10. If each nucleotide base were translated into an amino acid, only ________ of 20 amino acid would be specified.

a. 5

b. 4

c. 8

d. 15

Ans. b

11. Triplets of nucleotide bases are the largest unit of uniform length that can code for all the amino acids.(true/false)

Ans. false

12. RNA -------DNA-----PROTEIN (true/false)

Ans. false

13. Transcription occurs in ________ and m RNA is transported to the cytoplasm where translation occurs.

Ans. nucleus

14. Each RNA transcript can be translated repeatedly. (true/false)

Ans. true

15. Why a m RNA molecule is complementary rather than identical to its DNA template?

Ans. An m RNA molecule is complementary rather than identical to its DNA template because RNA bases are assembled on the template according to base pairing rules.

16. During _________ the gene determines the sequence of base along the length of an m RNA molecule.

Ans. transcription

17. The m RNA base triplets are called _________

Ans. codons

18. It takes 300 nucleotides along an m RNA strand to code for a polypeptide that is _________ amino acid long.

a. 200

b. 150

c. 100

d. 300

Ans. c

19. During translation the sequences of codons along an m RNA molecule is _______ or _________ into a sequence of amino acid making up a polypeptide chain.

Ans. decoded , translated

20. Like a new strand of DNA, the RNA molecule is synthesized in an antiparallel direction to the template strand of DNA. (true/false)

Ans. true

For more information about Translation from Gene to Protein, go to:

http://www.crushthattest.com

http://www.menteon.com