IGCSE Biology: Cells, Nutrition, and Human Physiology

Biology

A comprehensive review of IGCSE Biology topics including characteristics of living organisms, cell structure, specialized cells, stem cells, enzymes, biological molecules, digestion, respiration, and the circulatory system.

Cell Biology Human Physiology IGCSE

15 Questions Medium Ages 14+ Apr 6, 2026

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About this Study Set

This study set covers Biology through 15 practice questions. A comprehensive review of IGCSE Biology topics including characteristics of living organisms, cell structure, specialized cells, stem cells, enzymes, biological molecules, digestion, respiration, and the circulatory system. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 15 questions from the IGCSE Biology: Cells, Nutrition, and Human Physiology study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Which characteristic of living things is represented by the 'H' in MRS H NERG?

A Homeostasis
B Habitation
C Hydration
D Heartbeat

2 Which organelle is the site of aerobic respiration?

A Ribosome
B Mitochondria
C Chloroplast
D Nucleus

3 Which of these is a difference between plant and animal cells?

A Animal cells have a cell wall
B Plant cells have a permanent vacuole
C Animal cells have chloroplasts
D Plant cells lack a cell membrane

4 What is the primary function of a root hair cell?

A Photosynthesis
B Absorption of water and minerals
C Nerve impulse transmission
D Muscle contraction

5 What is the function of the acrosome in a sperm cell?

A Energy production
B Swimming
C Enzymes to penetrate an egg
D Genetic material storage

6 What is the term for an undifferentiated cell that can become a specialized cell?

A Gamete
B Zygote
C Stem cell
D Neuron

7 Which reagent is used to test for starch?

A Benedict's solution
B Biuret solution
C Iodine solution
D Ethanol

8 What are enzymes made of?

A Carbohydrates
B Lipids
C Proteins
D Nucleic acids

9 What happens to an enzyme when it is denatured by high heat?

A It works faster
B The active site changes shape
C It becomes a carbohydrate
D It is destroyed and disappears

10 What is the net movement of particles from a high to low concentration called?

A Osmosis
B Active Transport
C Diffusion
D Respiration

11 Which process requires energy to move substances against a concentration gradient?

A Diffusion
B Osmosis
C Active Transport
D Evaporation

12 What is the word equation for aerobic respiration?

A Glucose + Oxygen -> Carbon Dioxide + Water + Energy
B Carbon Dioxide + Water -> Glucose + Oxygen
C Glucose -> Lactic Acid + Energy
D Glucose -> Ethanol + Carbon Dioxide

13 Where is bile produced?

A Gall bladder
B Pancreas
C Stomach
D Liver

14 What is the main function of the xylem in plants?

A Transporting sugars
B Transporting water
C Photosynthesis
D Storage

15 Which component of blood is responsible for clotting?

A Red blood cells
B White blood cells
C Plasma
D Platelets

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