PrepBharat

1. Which of following is an example of phospholipid?
a) Palmitic acid
b) Arachidonic acid
c) Lecithin
d) Glycerol

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2. Which of the following is correct about lipids?
a) On the basis on melting points they are divided into fats and oils.
b) Neural tissues are made up of simple lipids only.
c) Phospholipids never forms a part of cell membrane.
d) Lipids are strictly macromolecule.

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3. Select the incorrect matching regarding the following diagram:

a) Purine – Its metabolism forms uric acid
b) Uracil – It is exclusively found in RNA only
c) Adenylic acid – Monomer of both RNA and DNA
d) Cholesterol – Forms a part of cell membrane

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4. Which of the following is correct about amino acid?
a) It is a compound containing amino and acidic group (–COOH).
b) It is a substitute and is methane.
c) It is based on the nature of ‘R’ group they are of many types.
d) All of these

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5. How many amino-acids are used to form protein?
a) 18
b) 20
c) 21
d) 22

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6. is a structure of α–amino acid. Based on different ® groups the following amino acids are formed. Select the correct amino acid according to different ® group.
a) R→H (glycine),
b) \[R→CH_{3} (alanine),\]
c) \[ R→CH_{2}OH (serine)\]
d) All the above

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7. The chemical and physical property of amino acid is based on
a) \[ –NH_{2} group\]
b) –COOH group
c) –R group
d) All of these

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8. Match the column:
Column I        Column II
A. Acidic  –  1. Valine
B. Basic  –  2. Lysine
C. Neural  –  3. Glutamic acid
D. Aromatic  –  4. Tyrosine, phenylalanine, tryptophan
a) A–3, B–2, C–1, D–4
b) A–2, B–3, C–4, D–1
c) A–4, B–1, C–2, D–3
d) A–1, B–2, C–2, D–4

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9. Which of the following is a Zwitter-ionic form of amino acid?
a)
b)
c)
d) All of these

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Answer: b
Explanation:

10. Protein is
a) Homopolymer
b) Heteropolymer
c) Polypeptide
d) All of these

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