Chapters and topics
- Human Digestive System 1 topic · 110 MCQs
- Human Circulatory System 1 topic · 105 MCQs
- Human Excretory System 1 topic · 107 MCQs
- Respiratory System and Types of Diseases 1 topic · 111 MCQs
- Coordination and Control 1 topic · 110 MCQs
- Reproduction and Inheritance 1 topic · 100 MCQs
- Pathogens, Immunity and Diseases 1 topic · 116 MCQs
- Biotechnology and Biostatistics 1 topic · 119 MCQs
Sample Biology MCQs
Try these questions, then open the full practice to work through every chapter. Tap “Show the answer” after you choose.
Q1. Blood capillaries in a villus absorb:
- water only
- fatty acids and glycerol only
- glucose and amino acids
- undigested fibre
Show the answer
Answer: C. glucose and amino acids
The correct answer is “glucose and amino acids”. Carried to the liver.
Q2. Humans have a double circulation, which means blood passes through the heart:
- never
- three times
- once
- twice in one complete circuit of the body
Show the answer
Answer: D. twice in one complete circuit of the body
The correct answer is “twice in one complete circuit of the body”. Pulmonary and systemic.
Q3. Egestion differs from excretion because egestion removes:
- carbon dioxide
- sweat
- urea
- undigested food that was never part of cells
Show the answer
Answer: D. undigested food that was never part of cells
The correct answer is “undigested food that was never part of cells”. Faeces.
Q4. Anthrax is best described as a/an ___ disease:
- zoonotic
- vector-borne
- non-infectious
- infectious (person to person)
Show the answer
Answer: A. zoonotic
The correct answer is “zoonotic”. anthrax: zoonotic.
Q5. Diabetes mellitus is caused by:
- too much growth hormone in childhood
- too little growth hormone in childhood
- too little insulin
- too little ADH
Show the answer
Answer: C. too little insulin
The correct answer is “too little insulin”. Diabetes mellitus: too little insulin.
Q6. For human eye colour (B = brown, dominant; b = blue), a cross BB × bb gives what fraction of brown offspring?
- 1
- 1/4
- 0
- 1/2
Show the answer
Answer: A. 1
Offspring genotypes: Bb, Bb, Bb, Bb; brown: 1.
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