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Biomolecules & Bio-chemistry GK MCQs With Answer & Explanation in English

Biomolecules & Bio-chemistry GK MCQs

1. What is the primary function of enzymes in biological systems?

  1. Energy storage
  2. Cell structure
  3. Catalyzing chemical reactions
  4. DNA replication

Show Answer

Answer: Catalyzing chemical reactions

Enzymes are biological catalysts that speed up chemical reactions in living organisms.

2. Which of the following is a monosaccharide?

  1. Sucrose
  2. Glucose
  3. Lactose
  4. Maltose

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Answer: Glucose

Glucose is a simple sugar and a monosaccharide.

3. What is the main function of DNA?

  1. Energy storage
  2. Protein synthesis
  3. Cell structure
  4. ATP production

Show Answer

Answer: Protein synthesis

DNA carries the genetic information needed for protein synthesis.

4. Which of the following is a function of lipids in the human body?

  1. Quick energy storage
  2. Insulation
  3. Structural support
  4. Enzyme production

Show Answer

Answer: Insulation

Lipids function in insulation and act as a long-term energy storage.

5. What type of biomolecule is insulin?

  1. Carbohydrate
  2. Lipid
  3. Protein
  4. Nucleic acid

Show Answer

Answer: Protein

Insulin is a protein hormone that regulates blood sugar levels.

6. Which of the following is NOT a component of a nucleotide?

  1. Phosphate group
  2. Deoxyribose sugar
  3. Amino group
  4. Nitrogenous base

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Answer: Amino group

Nucleotides consist of a phosphate group, a sugar, and a nitrogenous base.

7. What is the primary function of RNA?

  1. Energy storage
  2. Genetic information storage
  3. Catalyzing reactions
  4. Protein synthesis

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Answer: Protein synthesis

RNA plays a key role in protein synthesis.

8. Which of the following is a disaccharide?

  1. Glucose
  2. Fructose
  3. Sucrose
  4. Maltose

Show Answer

Answer: Sucrose

Sucrose is a disaccharide composed of glucose and fructose.

9. What is the building block of proteins?

  1. Nucleotide
  2. Amino acid
  3. Fatty acid
  4. Monosaccharide

Show Answer

Answer: Amino acid

Proteins are made up of amino acid chains.

10. Which organelle is responsible for cellular respiration?

  1. Nucleus
  2. Mitochondrion
  3. Endoplasmic reticulum
  4. Golgi apparatus

Show Answer

Answer: Mitochondrion

Mitochondria are the powerhouse of the cell and are involved in cellular respiration.

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Rohit Puri

Rohit Puri is an experienced educator and passionate advocate for knowledge dissemination in India. With a strong background in education, he has dedicated himself to empowering learners through well-researched and insightful content. As the author of engaging blogs on GK Scoop, Rohit focuses on general knowledge, current affairs MCQs, and essential educational topics relevant to the Indian context. His commitment to fostering a deeper understanding of critical issues makes him a trusted resource for students and educators alike. When he’s not writing, Rohit enjoys exploring new ways to enhance learning experiences and inspire curiosity in the classroom.

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