FBISE · Class 9

Class 9 Chemistry MCQs: Biochemistry

Practice chapter-wise MCQs with answers and explanations. Use the quiz mode for timed online tests.

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Quick revision

Class 9 Chemistry MCQs Biochemistry are one of the fastest ways to improve your board exam performance — especially when you practice with purpose, revise weak concepts, and learn from explanations.

On Prepzy, you can practice 94 MCQs from “Biochemistry” in Chemistry for FBISE. Each question is designed to mirror the style, wording, and concept-testing approach used in Pakistani board papers.

Use this chapter page to revise definitions, formulas, and key ideas, then attempt the MCQs in small sets. Track patterns in your mistakes: is it a concept gap, a calculation error, or a misread statement? Fixing the pattern is what raises your score.

If you’re preparing for matric / SSC Part exams, focus on understanding the concept first, then speed. MCQs reward clarity — not memorization. A clear concept turns into fast correct answers.

What to focus on

  • Primary focus: Biochemistry concepts tested in Class 9 Chemistry
  • Practice with instant answer-checking to reduce repeated mistakes
  • Revise common definitions, units, and standard results before timed practice
  • Aim for accuracy first, then build speed with short quizzes

Study tips

  • Read the question stem first, then scan options for distractors (near-correct choices).
  • If the chapter is formula-heavy, write a mini-formula sheet and revise it before every attempt.
  • After each practice set, re-attempt only the wrong MCQs to convert weak areas into strengths.
  • Mix easy + medium MCQs for momentum, then finish with hard questions for exam readiness.

MCQs (sample)

Showing 25 questions from this chapter. For a full timed test, use “Start online test”.

  1. 1. What is the basic structure of proteins composed of?

    • A chain of amino acids
    • Fatty acids
    • Nucleotides
    • Monosaccharides
    Answer & explanation

    Correct: A chain of amino acids

    Proteins are made up of a chain of amino acids.

  2. 2. What is the main energy source for the body?

    • Carbohydrates
    • Proteins
    • Lipids
    • Nucleic Acids
    Answer & explanation

    Correct: Carbohydrates

    Carbohydrates are identified as the body's main energy source.

  3. 3. What is the suggested daily intake of grains for teenagers aged 12 to 17?

    • 4-6 bowls
    • 3-8 bowls
    • 2-4 bowls
    • 5-7 bowls
    Answer & explanation

    Correct: 4-6 bowls

    Teenagers aged 12 to 17 are suggested to intake 4-6 bowls of grains daily.

  4. 4. What are carbohydrates primarily made of?

    • Carbon, hydrogen, and oxygen
    • Nitrogen and hydrogen
    • Carbon and sulfur
    • Oxygen and phosphorus
    Answer & explanation

    Correct: Carbon, hydrogen, and oxygen

    Carbohydrates are macromolecules made of carbon, hydrogen, and oxygen.

  5. 5. What does biochemistry study?

    • Living matter
    • Non-living matter
    • Only organic molecules
    • Only inorganic molecules
    Answer & explanation

    Correct: Living matter

    Biochemistry is defined as the study of living matter.

  6. 6. What are nucleic acids primarily composed of?

    • Nucleotides
    • Amino acids
    • Fatty acids
    • Simple sugars
    Answer & explanation

    Correct: Nucleotides

    Nucleic acids are macromolecules formed by nucleotides.

  7. 7. What is the primary role of nutrition for living organisms?

    • To stay alive
    • To increase body size
    • To improve memory
    • To enhance physical appearance
    Answer & explanation

    Correct: To stay alive

    Nutrition is the source of food required by living things to stay alive.

  8. 8. What are lipids primarily composed of?

    • Hydrocarbons and little oxygen
    • Proteins and nitrogen
    • Carbohydrates and water
    • Vitamins and minerals
    Answer & explanation

    Correct: Hydrocarbons and little oxygen

    Lipids are mainly composed of hydrocarbons and little oxygen.

  9. 9. What is the energy content of 1 gram of protein?

    • 4 kilocalories
    • 9 kilocalories
    • 7 kilocalories
    • 2 kilocalories
    Answer & explanation

    Correct: 4 kilocalories

    1 gram of protein provides 4 kilocalories of energy.

  10. 10. Which of the following is a major source of carbohydrates?

    • Beans
    • Fish
    • Meat
    • Eggs
    Answer & explanation

    Correct: Beans

    Beans are mentioned as a major source of carbohydrates.

  11. 11. How many servings of vegetables are suggested for adults?

    • 3 servings
    • 2 servings
    • 4 servings
    • 5 servings
    Answer & explanation

    Correct: 3 servings

    Adults are suggested to consume at least 3 servings of vegetables daily.

  12. 12. What is the primary function of carbohydrates in the body?

    • To supply energy
    • To provide structure
    • To transport oxygen
    • To secrete hormones
    Answer & explanation

    Correct: To supply energy

    The primary function of carbohydrates is to supply energy to all cells of the body.

  13. 13. Which of the following is NOT a component studied in biochemistry?

    • Carbohydrates
    • Fats or lipids
    • Minerals
    • Proteins
    Answer & explanation

    Correct: Minerals

    Minerals are not mentioned as components studied in biochemistry according to the content.

  14. 14. Which type of nucleic acid is double-stranded?

    • DNA
    • RNA
    • Both DNA and RNA
    • Neither DNA nor RNA
    Answer & explanation

    Correct: DNA

    DNA (deoxyribonucleic acid) is described as a double-stranded form of nucleic acid.

  15. 15. Which of the following is NOT a benefit of a healthy diet?

    • Reduces high blood pressure
    • Lowers high cholesterol
    • Increases the risk of disease
    • Enhances muscle strength
    Answer & explanation

    Correct: Increases the risk of disease

    A healthy diet can lower the risk of disease, not increase it.

  16. 16. In what type of solvents are lipids soluble?

    • Organic solvents
    • Polar solvents
    • Water
    • Acids
    Answer & explanation

    Correct: Organic solvents

    Lipids are soluble in organic solvents like alcohol and chloroform.

  17. 17. Which of the following is a function of proteins in the body?

    • They help speed up chemical reactions.
    • They store genetic information.
    • They provide insulation.
    • They transport oxygen in blood.
    Answer & explanation

    Correct: They help speed up chemical reactions.

    Proteins, including enzymes, help speed up chemical reactions in the body.

  18. 18. What function do carbohydrates serve in the body?

    • Feed muscles and brain
    • Repair tissues
    • Transport nutrients
    • Store genetic information
    Answer & explanation

    Correct: Feed muscles and brain

    Carbohydrates provide energy to feed the muscles and brain.

  19. 19. What condition does malnutrition describe?

    • A deficiency in all macronutrients
    • Excess nutrients only
    • A balanced diet
    • Only vitamin deficiency
    Answer & explanation

    Correct: A deficiency in all macronutrients

    Malnutrition is a condition that develops when the body is deprived of vitamins, minerals, and other nutrients, which can include being undernourished or over nourished.

  20. 20. How much energy does 1 gram of carbohydrate provide?

    • 2 kilocalories
    • 4 kilocalories
    • 6 kilocalories
    • 8 kilocalories
    Answer & explanation

    Correct: 4 kilocalories

    1 gram of carbohydrate provides 4 kilocalories of energy.

  21. 21. Biochemistry combines which two fields?

    • Biology and physics
    • Biology and chemistry
    • Chemistry and geology
    • Biology and mathematics
    Answer & explanation

    Correct: Biology and chemistry

    Biochemistry is a combination of biology and chemistry.

  22. 22. What is the function of RNA in cells?

    • Holds genetic information
    • Converts genetic information into protein sequences
    • Replicates DNA
    • Forms structures of cells
    Answer & explanation

    Correct: Converts genetic information into protein sequences

    RNA converts genetic information from genes into amino acid sequences of proteins.

  23. 23. What percentage of a balanced diet should consist of carbohydrates?

    • 12%
    • 33%
    • 55%
    • 50%
    Answer & explanation

    Correct: 55%

    Carbohydrates should make up 55% of a balanced diet.

  24. 24. What is one function of lipids in the human body?

    • Regulating temperature
    • Controlling cell membrane permeability
    • Transporting oxygen
    • Digesting carbohydrates
    Answer & explanation

    Correct: Controlling cell membrane permeability

    Lipids help control what goes in and out of your cells, indicating their role in cell membrane permeability.

  25. 25. What are enzymes?

    • Proteins that act as biological catalysts
    • Simple sugars
    • Nucleic acids
    • Fatty acids
    Answer & explanation

    Correct: Proteins that act as biological catalysts

    Enzymes are proteins that function as biological catalysts to speed up reactions.

FAQs

Are these Class 9 Chemistry MCQs Biochemistry aligned with FBISE?

Yes. The MCQs are organized chapter-wise for FBISE and designed to match board exam patterns. If your teacher has added custom MCQs, they will also appear here.

How many MCQs should I practice from “Biochemistry” each day?

A good daily target is 20–40 MCQs with full review of mistakes. If you’re short on time, do 15 MCQs but read explanations carefully.

What’s the best way to revise this chapter before an exam?

Revise the chapter summary, list your weak sub-topics, then practice MCQs in timed sets. Re-attempt wrong questions after a short break to lock in learning.

Can I take an online test for this chapter?

Yes. Start a chapter quiz to simulate an online test. Use it to improve speed and accuracy under time pressure.

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