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    Home » Important MCQs on Biomolecules

    Important MCQs on Biomolecules

    Dr. Vikas JasrotiaBy Dr. Vikas JasrotiaAugust 31, 2021No Comments
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    Important MCQs on Biomolecules

    Important MCQs on Biomolecules

    Que 1. Which of the following statements is not correct?
    i) Some antiseptics can be added to soaps.
    ii) Dilute solutions of some disinfectants can be used as antiseptics.
    iii) Disinfectants are antimicrobial drugs.
    iv) Antiseptic medicines can be ingested.
    Ans 1. (iv)

    Que 2. Which is the correct statement about birth control pills?
    i) Contain estrogen only.
    ii) Contain progesterone only.
    iii) Contain a mixture of estrogen and progesterone derivatives.
    iv) Progesterone enhances ovulation.
    Ans 2. (iii)

    Que 3. Which statement about aspirin is not true
    i) Aspirin belongs to narcotic analgesics.
    ii) It is effective in relieving pain.
    iii) It has anti-blood-clotting action.
    iv) It is a neurologically active drug.
    Ans 3. (i)

    Que 4. Which of the following chemicals can be added for sweetening of food items at cooking temperature and does not provide calories?
    i) Sucrose
    ii) Glucose
    iii) Aspartame
    iv) Sucralose
    Ans 4. (iv)

    Que 5. Which of the following will not enhance the nutritional value of food?
    i) Minerals
    ii) Artificial sweeteners
    iii) Vitamins
    iv) Amino acids
    Ans 5. (ii)

    Que 6. Salvarsan is an arsenic-containing drug that was first used for the treatment of_______.
    i) Syphilis
    ii) Typhoid
    iii) Meningitis
    iv) Dysentery
    Ans 6. (i)

    Que 7. A narrow spectrum antibiotic is active against _______________.
    i) Gram-positive or gram-negative bacteria.
    ii) Gram-negative bacteria only.
    iii) Single organism or one disease.
    iv) Both gram-positive and gram-negative bacteria.
    Ans 7.  (ii)

    Que 8. The compound that causes general antidepressant action on the central nervous system belongs to the class of _____________.
    i) Analgesics
    ii) Tranquilizers
    iii) Narcotic analgesics
    iv) Antihistamines A
    Ans 8. (ii)

    Que 9. Compound which is added to soap to impart antiseptic properties is _________.
    i) Sodium lauryl sulphate
    ii) Sodium dodecylbenzenesulphonate
    iii) Rosin
    iv) Bithional
    Ans 9. (iv)

    Que 10. Equanil is __________.
    i) Artificial sweetener
    ii) Tranquilizer
    iii) Antihistamine
    iv) Antifertility drug
    Ans 10. (ii)

    Important MCQs on Biomolecules

    Que 11. Which of the following enhances the leathering property of soap?
    i) Sodium carbonate
    ii) Sodium resinate
    iii) Sodium stearate
    iv) Trisodium phosphate
    Ans 11. (ii)

    Que 12. Glycerol is added to soap. It functions ______________.
    i) As a filler
    ii) To increase leathering
    iii) To prevent rapid drying
    iv) To make soap granules.
    Ans 12. (iii)

    Que 13. Which of the following compounds are administered as antacids?
    i) Sodium carbonate
    ii) Sodium hydrogen carbonate
    iii) Aluminium carbonate
    iv) Sodium Chloride
    Ans 13. (ii)

    Que 14. Polyethylene glycols are used in the preparation of which type of detergents?
    i) Cationic detergents
    ii) Anionic detergents
    iii) Non-ionic detergents
    iv) Soaps
    Ans 14. (iii)

    Que 15. Which of the following is not a target molecule for drug function in the body?
    i) Carbohydrates
    ii) Lipids
    iii) Vitamins
    iv) Proteins
    Ans 15. (iii)

    Important MCQs on Biomolecules

    Que 16. Which of the following reagents does not react with glucose?
    a) NH2OH
    b) HCN
    c) 2,4 –DNP reagent
    d) Br2 water
    Ans 16. (c)

    Que 17. The number of chiral carbons in ß-D (+) glucose is
    a) Five
    b) Two
    c) Four
    d) Six
    Ans 17. (a)

    Que 18. Which of the following nitrogenous bases is not present in RNA?
    a) Adenine
    b) Cytosine
    c) Guanine
    d) Thymine
    Ans 18. (d)

    Que 19. The helical structure or a secondary structure of proteins is stabilized by:
    a) Peptide bonds
    b) Dipeptide bonds
    c) H-bond
    d) Ether bond
    Ans 19. (c)

    Que 20. Which of the following is/are example(s) of denaturation of protein?
    a) Coagulation of egg white
    b) Curdling of milk
    c) Clotting of blood
    d) Both (a) and (b)
    Ans 20. (d)

    Important MCQs on Biomolecules

    Que 21. The spatial arrangement of two or more polypeptide chains with respect to each other is known as
    a) Primary structure
    b) Secondary structure
    c) Tertiary structure
    d) Quaternary structure
    Ans 21. (d)

    Que 22. Nucleotides are joined together by
    a) Glycosidic bond
    b) Peptide linkage
    c) Hydrogen bonding
    d) Phosphodiester linkage
    Ans 22. (d)

    Que 23. Oxime is formed by treating glucose with
    a) Water
    b) Nitric acid
    c) Bromine water
    d) Hydroxylamine
    Ans 23. (d)

    Que 24. Peptides upon hydrolysis give
    a) Amines
    b) Amino acids
    c) Ammonia
    d) None of these
    Ans 24. (b)

    Que 25. Which amino acid has no asymmetric carbon atom?
    a) Histidine
    b) Glycine
    c) Alanine
    d) Threonine
    Ans 25. (b)

    Important MCQs on Biomolecules

    Que 26. Glucose when reacts with HI and red phosphorus gives
    a) n-hexane
    b) n-heptane
    c) n-pentane
    d) n-octane
    Ans 26. (a)

    Que 27. Which one of the following is an essential amino acid?
    a) Cysteine
    b) Serine
    c) Tyrosine
    d) Isoleucine
    Ans 27. (d)

    Que 28. Which of the following protein is globular:
    a) Collagen
    b) Albumin
    c) Myosin
    d) Fibroin
    Ans 28. (b)

    Que 29. Proteins are condensation polymers of
    a) Alpha-amino acids
    b) Beta amino acids
    c) Alpha hydroxy acids
    d) Beta hydroxyl acids
    Ans 29. (a)

    Que 30. Coagulation of proteins is known as
    a) Dehydration
    b) Decay
    c) Deamination
    d) Denaturation
    Ans 30. (d)

    Assertion Reason type

    Important MCQs on Biomolecules

    A. Both assertion and reason are correct statements and reason is the correct explanation of the assertion.
    B. Both assertion and reason are correct statements and reason is not the correct explanation of the assertion
    C. Assertion is correct but the reason is the wrong statement
    D. Assertion is wrong but the reason is a correct statement

    Que 31. Assertion: The pentaacetate of glucose does not react with hydroxylamine
    Reason: Glucose contains a free aldehyde group
    Ans 31. (C)

    Que 32. Assertion: In zwitterionic form, amino acids show amphoteric behavior.
    Reason: Amino acids in zwitterionic form react with acid and base both.
    Ans 32. (A)

    Que 33. Assertion: Glucose is a ketohexose
    Reason: Glucose contains six carbon atoms and an aldehyde group
    Ans 33. (D)

    Important MCQs on Biomolecules

    Que 34. Assertion: Glucose is a monosaccharide
    Reason: Glucose cannot be hydrolyzed further to give a simpler unit of polyhydroxy aldehyde or ketone.
    Ans 34. (A)

    Que 35. Assertion: DNA is responsible for maintaining the identity of different species of organisms over millions of years
    Reason: DNA is the chemical basis of heredity and may be regarded as the reserve of genetic information.
    Ans 35.  (A)

    Important MCQs on Biomolecules

    BIOMOLECULES QUESTIONS AND ANSWERS PDF

    https://www.sciencemotive.com/biomolecules/biomolecules-questions-and-answers-pdf/

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