Free Macromolecules MCQs with Answers

299 Macromolecules MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.

Proteins are classified by shape, composition and structure, from primary amino acid sequence to secondary, tertiary and quaternary organisation, and their biological roles are linked to this structure. Enzymes are examined as protein biocatalysts, including active sites, substrate specificity, activation energy, cofactors and factors affecting activity.

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299 questions · page 14 of 15

  • A. Carbon
  • B. Hydrogen
  • C. Nitrogen
  • D. Sulfur

Explanation: Proteins are macromolecules composed of amino acids, which are linked together by peptide bonds.

Correct answer: Sulfur
  • A. Animals
  • B. Plants
  • C. Human beings
  • D. A and C

Explanation: C is Correct! Since humans are animals, they also contain globulin proteins, especially in their blood plasma.

Correct answer: A and C
  • A. Simple
  • B. Conjugated/compound
  • C. Derived
  • D. All of these

Explanation: Conjugated/compound proteins are made up of both protein and non-protein components.

Correct answer: Conjugated/compound
  • A. Mn2+
  • B. Mg2+
  • C. Zn2+
  • D. None of these options are correct

Explanation: OPTION A: The activator of the phosphatase enzyme is not Mn2+ because it is not the right type of ion to activate the enzyme.OPTION B: The…

Correct answer: Mg2+
  • A. Mn2+
  • B. Mg2+
  • C. Zn2+
  • D. None of these

Explanation: Zn2+ is the activator of carbonic anhydrase.

Correct answer: Zn2+
  • A. Oxidoreductase
  • B. Hydrolases
  • C. Ligases
  • D. Transferases

Explanation: Option A is correct as dehydrogenase removes hydrogens thus oxidises the substrate, therefore it is under "oxidoreductase".

Correct answer: Oxidoreductase
  • A. Lyases
  • B. Hydrolases
  • C. Ligases
  • D. Transferases

Explanation: Option A is correct since lyases are enzymes that catalyze the breakdown of specific covalent bonds and the removal of groups without…

Correct answer: Lyases
  • A. LDH-1.
  • B. Protease.
  • C. Alkaline Phosphate.
  • D. None of these options is correct.

Explanation: Alkaline phosphatase is used for the diagnosis of jaundice. It is the condition in which the skin, white of the eyes, and mucous membrane…

Correct answer: Alkaline Phosphate.
  • A. Thrombin
  • B. L-asparaginase
  • C. Both
  • D. None iof these

Explanation: There are several types of enzymes that are currently being studied for the treatment of cancer in children.

Correct answer: L-asparaginase
  • A. Vitamins
  • B. DNA
  • C. Coenzyme
  • D. None

Explanation: Option C is correct.Enzymes are proteins which help to catalyze the biochemical reaction.

Correct answer: Coenzyme
  • A. Coenzyme
  • B. Cofactor
  • C. Apoenzyme
  • D. Prosthetic group

Explanation: Apoenzyme is a protein part that binds to a non-protein cofactor to form an active conjugated enzyme known as the holoenzyme.

Correct answer: Apoenzyme
  • A. Thousands
  • B. Millions
  • C. Hundreds
  • D. Billions

Explanation: Enzymes can be denatured and precipitated with salts, solvents, and other reagents.

Correct answer: Millions
  • A. Vitamins
  • B. DNA
  • C. Coenzyme
  • D. None of these options are correct

Explanation: The non-protein partco-factor includes organic and metallic organic molecules and sometimes Vitamins.

Correct answer: Vitamins
  • A. Coenzymes
  • B. Holoenzymes
  • C. None of these
  • D. Both of these

Explanation: A coenzyme is defined as an organic molecule that binds to the active sites of certain enzymes to assist in the catalysis of a reaction.

Correct answer: Coenzymes
  • A. Hydrolases
  • B. Lyases
  • C. Transferases
  • D. Ligases

Explanation: Ligases are enzymes capable of catalyzing the reaction of joining two large molecules by establishing a new chemical bond.Carboxylase is…

Correct answer: Ligases
  • A. Hexokinase
  • B. Glucokinase
  • C. Fructokinase
  • D. Malonic acid

Explanation: Hexokinase is an enzyme that is used in a glycolysis process. It catalyzes the reaction by phosphorylating glucose into…

Correct answer: Hexokinase
  • A. Transport protiens
  • B. Structural protiens
  • C. Genetic protiens
  • D. Regulatory protiens

Explanation: The proteins which transfer heredity information from one generation to another are called genetic proteins.

Correct answer: Genetic protiens
  • A. Gelatine
  • B. Cheese
  • C. Albumin
  • D. Gelly

Explanation: The hides and bones of certain animals - often cows and pigs - are boiled, dried, treated with a strong acid or base, and finally filtered…

Correct answer: Gelatine
  • A. Buttons & buckles
  • B. Tanning of leather
  • C. Gelatin
  • D. Bakery goods

Explanation: Major applications of casein are paper coatings, glues, paints, plastics, and man-made fibres, buttons and buckles.

Correct answer: Buttons & buckles
  • A. Coagulation
  • B. Dehydration
  • C. Denaturation
  • D. None of these options are correct

Explanation: Protein structure can be disrupted by heating, changing, and by chemicals. This process is called denaturation.

Correct answer: Denaturation