1. Proteins are called natural polyamides because they are
Answer: C. naturally occurring polymers of amino acids
Chemistry Class 10 Unit 13: Biochemistry MCQs
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2. Which of the following best describes proteins?
Answer: A. Polymers of amino acids
3. The basic structural unit (monomer) of a protein is
Answer: B. an amino acid
4. An amino acid contains an amine group and a
Answer: D. carboxylic acid group
5. Amino acids join together by eliminating a molecule of
Answer: C. water
6. The linkage that joins two amino acid units is called a
Answer: D. peptide bond
7. Which bond is responsible for linking amino acids together in a protein?
Answer: B. Peptide bond
8. The sequence of amino acids in a protein chain is its
Answer: A. primary structure
9. A protein consisting of more than one folded amino acid chain has a ______ structure.
Answer: C. quaternary
10. Enzymes are
Answer: B. proteins that speed up chemical reactions in the body
11. Haemoglobin in red blood cells carries
Answer: A. oxygen
12. Insulin is a protein hormone made in the
Answer: D. pancreas
13. Which of the following is NOT a function of proteins in the body?
Answer: D. Storing genetic information
14. Lipids are components of plant or animal tissue that are
Answer: B. insoluble in water but soluble in low-polarity solvents
15. The primary function of lipids in the body is
Answer: C. long-term energy storage
16. Fats and oils are esters of fatty acids with
Answer: A. glycerol
17. Carbohydrates have the general formula
Answer: D. Cₓ(H₂O)ᵧ
18. Plants prepare carbohydrates by
Answer: B. photosynthesis
19. The primary function of carbohydrates is to
Answer: C. provide energy to the body
20. Nucleic acids are the main ______ molecules of the cell.
Answer: A. information-carrying
21. DNA stands for
Answer: B. deoxyribonucleic acid
22. The acid that carries genetic information is
Answer: D. nucleic acid
23. Vitamins are
Answer: A. organic molecules needed in small quantities for proper metabolic function
24. The number of essential vitamins is
Answer: C. 13
25. The fat-soluble vitamins are
Answer: D. A, D, E and K
26. The water-soluble vitamins are
Answer: A. B and C
27. Vitamin A supports
Answer: B. vision, immune function and skin health
28. Vitamin C is found in
Answer: C. oranges, strawberries and tomatoes
29. Vitamin D is essential for
Answer: A. bone health and calcium absorption
30. Vitamin K is essential for
Answer: C. blood clotting
31. Vitamin E acts as an
Answer: B. antioxidant
32. Biochemistry is the study of
Answer: D. chemical processes within a cell
33. A pregnancy test checks urine or blood for the hormone
Answer: D. hCG (human chorionic gonadotropin)
34. Which biochemistry application is used to determine parentage?
Answer: C. Parental genetic testing
35. Genetics is the branch of biology that studies
Answer: A. genes, heredity and variation
36. Genetic engineering is a process that uses laboratory technology to
Answer: B. modify the DNA of an organism
37. Gene therapy is a medical technique that
Answer: C. modifies a person's genes to treat or prevent disease
38. Cloning means
Answer: B. producing an exact genetic copy of a gene, cell or organism
39. Therapeutic cloning produces
Answer: A. embryonic stem cells for medical research
40. Stem cells are special cells that can
Answer: D. transform into different types of cells
About Chemistry Class 10 Unit 13 MCQs (Federal Board)
These 40 Chemistry MCQs cover Class 10 Unit 13: Biochemistry of the Federal Board (FBISE) SSC-II (Class 10) syllabus. They are SLO-based MCQs as per the new pattern for FBISE exams. Each question has four options and the correct answer is shown, so you can practise for the annual examination and find the topics you still need to revise. You can also read the Biochemistry notes for this chapter. Download the Biochemistry MCQs as a PDF using the button at the top of this page.