CSIR NET JRF Amino Acid notes: Question

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1. How many amino acids are involved in making proteins in humans?


5
20
35
64

2. The code Asp denotes which of these amino acids?

Aspartic acid
Methionine
Threonine
Tryptophan

3. Amino acids join up into a large chain (polymer) to create what biological molecule(s)?

Proteins
Bone
DNA
Fats

4. Okay, a question about the nature of sidechains. There are four main groups of amino acids: acidic, basic, polar and...?

Answer: (Two Words, accepted with a space or a hyphen, or one full word)

5. Which of these is the one-letter code for glutamine?

Q
O
G
S

6. F codes for which amino acid?

Valine
Phenylalanine
Serine
Proline

7. What is the three-letter code for the amino acid alanine?

Aln
Ane
Ali
Ala

8. Which of these three-letter codes is correct regarding the amino acid isoleucine?

Iso
Ilc
Isl
Ile

9. Which amino acid is coded for by the letter H?

Answer: (One Word)

10. The amino acid lysine has the one-letter code L.

True
False

11. The amino acid coded for by the letter E is basic.

True
False

12. Which amino acid is coded for by the letter W?

Weimarine
Tryptophan
Arginine
Serine

13. Which amino acid is coded for by the letter Y?

Tyrosine
Valine
Cysteine
Histidine

14. Which amino acid is coded for by the three-letter code Met?

Answer: (One Word)

15. Last question; a bit of a bonus. An unspecified or unknown amino acid is given the one-letter code X, but what is the three-letter code?

Xaa
Xyz
Xxx
Xxz

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