The Genetic Code Trivia Quiz

Questions : 8 | Total Attempts: 763 | Recent Updated: 27-May-2020
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DNA contains four types of nucleotides which can be arranged in numerous ways. This arrangement of nucleotides is basically a coded language connected with the protein synthesis which tells about the sequence of amino acids in a polypeptide chain. It was hypothesized that the triplet sequence of nucleotides codon codes for one amino acid. Therefore the number of possible codons can be 64 whereas the number of amino acids is 20. Nirenberg and Matthaei worked on the degeneracy of codons that is which codon codes for which amino acid. So take this quiz and increase your knowledge about genetic code.

Questions Excerpt


1. Who first deciphered the triplet codons of cysteine and valine?

A. Nirenberg

B. Mathaei

C. Khurana

D. Bhargav

2. Genetic code always read from.......

A. 3'-5'

B. 5'-3'

C. Both of these

D. None of these

3. Which of the following are terminating codons?

A. UAA

B. UAG

C. UGA

D. All of these

4. What is the other name of nonsense codons?

A. Punctuation codons

B. Selfish codons

C. Both of these

D. None of these

5. In Paramecium UAA and UGA codes for.......

A. Methionine

B. Valine

C. Glutamine

D. Tryptophan

6. In mycoplasma and yeast UGA codes for.........

A. Methionine

B. Valine

C. Glutamine

D. Tryptophan

7. A genetic codon is but in,............ AGG and AGA act as stop signals otherwise the code for arginine.

A. DNA

B. Protoplasm

C. Mitochondria

D. Ribosome

8. Out of 64 triplets, how many codes for a different amino acids?

A. 60

B. 61

C. 62

D. 63

 

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