This is the Practice Set 1 of the Biochemistry test series for B pharmacy, Diploma pharmacy, and medical/paramedical students. there will be a total of 5 sets in this Biochemistry test series. In each set, there will be 25 to 30 MCQs for practice and revision of the basic concept of biochemistry. This Practice set includes important MCQs from Biochemistry. These MCQs help to clear basic concepts.
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Q.1.
Ribose is a
- Triose
- Tetrose
- Pentose
- Hexose
Answer:
(C)
Explanation: Ribose is an organic compound with a pentose monosaccharide
Explanation: Ribose is an organic compound with a pentose monosaccharide
Q.2.
In the TCA malate is oxidised to
- Fumarate
- L-ketoglutarate
- Succinate
- Oxaloacetate
Answer:
(D)
Explanation: Malate dehydrogenase is an enzyme that reversibly catalyse the oxidation of malate to oxaloacetate.
Explanation: Malate dehydrogenase is an enzyme that reversibly catalyse the oxidation of malate to oxaloacetate.
Q.3.
Heparin is a
- Monosaccharide
- Disaccharide
- Mucopolysaccharide
- Heteropolysaccharide
Answer:
(D)
Explanation: Heparin is a highly sulphated glycosaminoglycogen.
Explanation: Heparin is a highly sulphated glycosaminoglycogen.
Q.4.
Transamination takes place principally in
- Liver
- Muscles
- Stomach
- Gall bladder
Answer:
(A)
Explanation: Liver is the main organ where transamination takes place.
Explanation: Liver is the main organ where transamination takes place.
Q.5.
Amino acids linked by
- Hydrogen bond
- Sulphate bond
- Ionic bond
- Peptide bond
Answer:
(D)
Explanation: Proteins are polymers linked by peptide bond.
Explanation: Proteins are polymers linked by peptide bond.
Q.6.
One example of phosphoprotein
- Phenylalanine
- Tryptophan
- Casein
- Glycine
Answer:
(C)
Explanation: Phosphoprotein is a protein that is post translationally modified by the attachment of single phosphate group.
Explanation: Phosphoprotein is a protein that is post translationally modified by the attachment of single phosphate group.
Q.7.
Schlock and humph method is used to determine
- C terminal amino acid
- N and C terminal amino acid
- N terminal amino acid
- Nono of the above
Answer:
(A)
Explanation: Schlock and humph method is used to determine C terminal amino acid.
Explanation: Schlock and humph method is used to determine C terminal amino acid.
Q.8.
Protein are precipatetd by
- Water
- Sodium hydroxide
- Formaldehyde
- Trichloroethane acetic acid
Answer:
(D)
Explanation: Trichloroacetic acid is widely used in downstream processing of biological products.
Explanation: Trichloroacetic acid is widely used in downstream processing of biological products.
Q.9.
One example of sulphur containing amino acid
- Aspartate
- Cysteine
- Serine
- Tyrosine
Answer:
(B)
Q.10.
In beta oxidation no of ATP molecule utilised are
- 4
- 2
- 5
- Nono of the above
Answer:
(A)
Explanation: In beta oxidation no of ATP molecule utilised are 4
Explanation: In beta oxidation no of ATP molecule utilised are 4
Q.11.
The normal level of ketone bodies in the blood are
- 1-5 mg/dl
- 10 mg/dl
- 15 mg/dl
- 20 mg/dl
Answer:
(A)
Explanation: The normal level of ketone bodies in the blood are 1-5 mg/dl.
Explanation: The normal level of ketone bodies in the blood are 1-5 mg/dl.
Q.12.
The fats are
- Completely insoluble in water
- Sparingly soluble in water
- Completely soluble in water
- Nono of the above
Answer:
(D)
Q.13.
One example of polyunsaturated fattyacid is
- Acetic acid
- Butanoic acid
- Glyceric acid
- Linoleic acid
Answer:
(D)
Explanation: polyunsaturated fattyacid contains more than one double bond in their backbone
Explanation: polyunsaturated fattyacid contains more than one double bond in their backbone
Q.14.
Fatty acids synthesis occurs in
- Cytoplasm
- Mitochondria
- Heart
- Lungs
Answer:
(A)
Explanation: Fatty acids synthesis occurs in Cytoplasm.
Explanation: Fatty acids synthesis occurs in Cytoplasm.
Q.15.
Cholesterol contains of
- 27 carbon atom
- 30 carbon atom
- 14 carbon atom
- 35 carbon atom
Answer:
(A)
Explanation: Cholesterol contains of 27 carbon atom.
Explanation: Cholesterol contains of 27 carbon atom.
Q.16.
One example of glycoside is
- Cholesterol
- Sphingomyelin
- Lecithin
- Gangliosides
Answer:
(D)
Explanation: Gangliosides belong to glycosides.
Explanation: Gangliosides belong to glycosides.
Q.17.
Similarity between inorganic catalysts and enzymes
- They have very high molecular weight
- Both catalyse the biological reaction
- Both are efficient catalysts
- They temporally combine with substrate molecule
Answer:
(D)
Explanation: inorganic catalysts and enzymes only temporally combine with substrate molecule.
Explanation: inorganic catalysts and enzymes only temporally combine with substrate molecule.
Q.18.
Malonate is competitive inhibitor of
- Succinate
- Fumarate
- Oxaloacetate
- Aspartate
Answer:
(A)
Explanation: Malonate is competitive inhibitor of Succinate
Explanation: Malonate is competitive inhibitor of Succinate
Q.19.
Oxidoreductase include enzyme
- Which are concerned with beta oxidation and reduction
- Catalyse the transfer of group from one substance to other
- Carry out hydrolytic reaction
- None of the above
Answer:
(A)
Explanation: Oxidoreductase catalyse the transfer of electrons from one molecule to the other molecule.
Explanation: Oxidoreductase catalyse the transfer of electrons from one molecule to the other molecule.
Q.20.
Wilson disease occurs due to abnormal secretion of
- cu2+
- Iron
- Ca2+
- Mg2+
Answer:
(C)
Explanation: It is an autosomal recessive genetic disorder in which copper accumulates in tissues.
Explanation: It is an autosomal recessive genetic disorder in which copper accumulates in tissues.
Q.21.
The main protein of connective tissue
- Keratin
- Myosin
- Collagen
- Melanin
Answer:
(B)
Explanation: Myosin comprise a family of ATP dependent motor proteins and are best known for their role in muscle contraction.
Explanation: Myosin comprise a family of ATP dependent motor proteins and are best known for their role in muscle contraction.
Q.22.
The sugar present in nucleic acid is
- Ribose
- Xylose
- Glycose
- Fructose
Answer:
(A)
Explanation: Ribose comprises the backbone for RNA and relates to deoxyribose as found in DNA by removal of the hydroxyl group on the 2C carbon.
Explanation: Ribose comprises the backbone for RNA and relates to deoxyribose as found in DNA by removal of the hydroxyl group on the 2C carbon.
Q.23.
Which element is required for contraction of muscles
- Calcium
- Sodium
- Magnesium
- Manganese
Answer:
(A)
Explanation: Muscle contraction is regulated by Ca2+ ions.
Explanation: Muscle contraction is regulated by Ca2+ ions.
Q.24.
Lipogenesis is the formation of
- Glucose from fat
- Fats from glucose
- Fats from surplus glucose
- Glycogen from fats
Answer:
(C)
Explanation: Lipogenesis is the formation of fatty acid from acetyl coA
Explanation: Lipogenesis is the formation of fatty acid from acetyl coA
Q.25.
Serum and phosphatase activity increases during
- Carcinoma
- Pancreatitis
- Leukemia
- Obstructive jaundice
Answer:
(A)
Explanation: Serum and phosphatase activity increases during Carcinoma.
Explanation: Serum and phosphatase activity increases during Carcinoma.
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