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Biochemistry BScN Ist Semester

• The general formula of monosaccharides is

(A) CnH2nOn (B) C2nH2On (C) CnH2O2n (D) CnH2nO2n

• The aldose sugar is

(A) Glycerose (B) Ribulose (C) Erythrulose (D) Dihydoxyacetone

• A triose sugar is

(A) Glycerose (B) Ribose (C) Erythrose (D) Fructose

• A pentose sugar is

(A) Dihydoxyacetone (B) Ribulose (C) Erythrose (D) Glucose

• The pentose sugar present mainly in the heart muscle is

(A) Lyxose (B) Ribose (C) Arabinose (D) Xylose

• Polysaccharides are

(A) Polymers (B) Acids (C) Proteins (D) Oils

• Two sugars which differ from one another only in configuration around a

single carbon atom are termed

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(A) Epimers (B) Anomers (C) Optical isomers (D) Stereoisomers

• the most important epimers of glucose is

(A) Galactose (B) Fructose (C) Arabinose (D) Xylose

• Compounds having the same structural formula but differing in spatial

configuration are known as (A) Stereoisomers (B) Anomers (C) Optical isomers (D) Epimers

• A sugar alcohol is

(A) Mannitol (B) Trehalose (C) Xylulose (D) Arabinose

• The sugar found in DNA is

(A) Xylose (B) Ribose (C) Deoxyribose (D) Ribulose

• The sugar found in RNA is

(A) Ribose (B) Deoxyribose (C) Ribulose (D) Erythrose

• The sugar found in milk is

(A) Galactose (B) Glucose (C) Fructose (D) Lactose

• Invert sugar is

(A) Lactose

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(B) Sucrose (C) Hydrolytic products of sucrose (D) Fructose

• Starch is a

(A) Polysaccharide (B) Monosaccharide (C) Disaccharide (D) None of these

• Synovial fluid contains

(A) Heparin (B) Hyaluronic acid (C) Chondroitin sulphate (D) Keratin sulphate

• Mucopolysaccharides are

(A) Homopolysaccharide (B) Hetropolysaccharides (C) Proteins (D) Amino acids

• All proteins contain the

(A) Same 20 amino acids (B) Different amino acids (C) 300 Amino acids occurring in nature (D) Only a few amino acids

• Proteins contain

(A) Only L- α - amino acids (B) Only D-amino acids

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(C) DL-Amino acids (D) Both (A) and (B)

• An essential amino acid in man is

(A) Aspartate (B) Tyrosine (C) Methionine (D) Serine

• Non essential amino acids

(A) Are not components of tissue proteins?(B) May be synthesized in the body from essential amino acids (C) Have no role in the metabolism (D) May be synthesized in the body in diseased states

• Which one of the following is semi-essential amino acid for humans?

(A) Valine (B) Arginine (C) Lysine (D) Tyrosine

• An example of polar amino acid is

(A) Alanine (B) Leucine (C) Arginine (D) Valine

• The amino acid with a no polar side chain is

(A) Serine (B) Valine (C) Asparagine (D) Threonine

• A ketogenic amino acid is

(A) Valine (B) Cysteine (C) Leucine (D) Threonine