Biochemistry 50 Mcqs With Answers

Biochemistry - 50 MCQs with Answers1. The basic building blocks of proteins are:A. MonosaccharidesB. Amino acidsC. Fatty acidsD. NucleotidesAnswer: B. Amino acids2. The storage form of glucose in animals is:A. StarchB. GlycogenC. CelluloseD. GalactoseAnswer: B. Glycogen3. The energy currency of the cell is:A. DNAB. RNAC. ATPD. NADHAnswer: C. ATP4. The enzyme that breaks down starch into maltose is:A. LipaseB. AmylaseC. PepsinD. T rypsinAnswer: B. Amylase5. The end product of glycolysis is:A. PyruvateB. Acetyl-CoAC. GlucoseD. Lactate onlyAnswer: A. Pyruvate6. The citric acid cycle (Krebs cycle) occurs in the:A. CytoplasmB. MitochondriaC. NucleusD. RibosomeAnswer: B. Mitochondria7. The pH of human blood is normally:A. 6.8B. 7.0C. 7.35-7.45D. 8.0Answer: C. 7.35-7.458. The genetic material in most living organisms is:A. DNAB. RNAC. ProteinD. LipidsAnswer: A. DNA9. The enzyme responsible for DNA replication is:A. RNA polymeraseB. DNA polymeraseC. LigaseD. HelicaseAnswer: B. DNA polymerase10. The structural protein present in hair and nails is:A. CollagenB. ElastinC. KeratinD. MyosinAnswer: C. Keratin11. Hemoglobin is a:A. MonosaccharideB. LipidC. ProteinD. Nucleic acidAnswer: C. Protein12. The deficiency of V itamin C causes:A. RicketsB. PellagraC. ScurvyD. BeriberiAnswer: C. Scurvy13. The main function of enzymes is to:A. Provide energyB. Speed up biochemical reactionsC. Act as structural componentsD. Store genetic informationAnswer: B. Speed up biochemical reactions14. The