List of top Biochemistry Questions on Biomolecules

The most abundant monosaccharide in nature is:

Match List I with List II:

List I	Functional Group	List II Description
A	Hydroxyl	I. DNA
B	Carboxyl	II. Proteins
C	Amino	III. Polar
D	Phosphate	IV. Fatty acids

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4-hydroxyproline is an example of:

The pH at which an amino acid has no net electric charge and does not move in an electric field is called:

Which of the following is used in protein classification?

Match List I with List II

List I	Protein Name	List II Molecular Weight (kDa)
A	β-galactosidase	(i) 14.4
B	Bovine Serum Albumin	(ii) 116.25
C	Ovalbumin	(iii) 45
D	Lysozyme	(iv) 66.2

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When a protein has two or more polypeptide subunits, their folding arrangement is called:

When wool sweaters are washed in hot water, they shrink. In contrast, when silk clothes are washed, they do not shrink under the same conditions:
(A) The β-woolen polypeptide chains are converted to the native α-helical conformation.
(B) The structure of silk β-sheets is more stable than that of wool.
(C) The β-woolen polypeptide chains remain in their native conformation.
(D) The structure of silk β-sheets is less stable than that of the wool protein structure.
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Which of the following statements are correct?
(A) Some types of lipids play critical roles as cofactors or signals.
(B) Prostaglandins are derived from arachidonate.
(C) Steroid hormones are derived from sterols.
(D) Vitamins D, A, and E are fat-soluble.
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Phosphatidylcholine and phosphatidylserine are examples of:

Match List I with List II

List I	Category	List II: Examples
A	Fatty acids	(iv) Oleate
B	Prenol lipids	(ii) Farnesol
C	Saccharolipids	(iii) Lipopolysaccharide
D	Polyketides	(i) Tetracycline

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Match List I with List II

List I	Animal Plasma Membrane	List II: Type of Sterol
A	Human myelin sheath	(iii) Cholesterol
B	Maize leaf	(iv) Stigmasterol
C	Yeast	(ii) Ergosterol
D	Paramecium	(i) Sitosterol

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In 1953, Frederick Sanger determined the amino acid sequence of which protein?