Biology MCQs for 2nd Year (Federal Board)

This page has over 1,100 multiple-choice questions for Biology (2nd Year (Federal Board)), arranged in 10 chapters and 10 topics. The chapters include Nervous Coordination, Hormonal Coordination, Immunity, Gaseous Exchange and Excretion, Osmoregulation and Homeostasis. Every question has four options, an instant answer and, where available, a short explanation.

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Chapters and topics

  • Nervous Coordination 1 topic · 161 MCQs
  • Hormonal Coordination 1 topic · 116 MCQs
  • Immunity 1 topic · 110 MCQs
  • Gaseous Exchange 1 topic · 102 MCQs
  • Excretion, Osmoregulation and Homeostasis 1 topic · 125 MCQs
  • Digestion 1 topic · 102 MCQs
  • Circulation and Lymphatic System 1 topic · 107 MCQs
  • Support and Movement 1 topic · 114 MCQs
  • Biotechnology, Bioinformatics and Applied Biology 1 topic · 113 MCQs
  • Biostatistics and Experimental Design 1 topic · 110 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. In nervous coordination, the neurotransmitter is/means:

  1. a chemical released at a synapse to transmit the impulse
  2. a long process that carries impulses away from the cell body
  3. groups of ribosomes in the cell body that make proteins
  4. the narrow gap between presynaptic and postsynaptic membranes
Show the answer

Answer: A. a chemical released at a synapse to transmit the impulse

Neurotransmitter: a chemical released at a synapse to transmit the impulse.

Q2. The disorder diabetes insipidus is caused by:

  1. too little cortisol and aldosterone
  2. too little thyroxine in adults
  3. too little thyroxine in children
  4. too little ADH
Show the answer

Answer: D. too little ADH

The correct answer is “too little ADH”. Diabetes insipidus: too little ADH.

Q3. An injection of anti-tetanus serum (antibodies) gives:

  1. naturally acquired passive immunity
  2. artificially acquired passive immunity
  3. naturally acquired active immunity
  4. artificially acquired active immunity
Show the answer

Answer: B. artificially acquired passive immunity

An injection of anti-tetanus serum (antibodies): artificially acquired passive immunity.

Q4. Which event occurs during inspiration?

  1. thoracic volume increases and pressure falls
  2. thoracic volume decreases and pressure rises
  3. ribs move down and inwards
  4. air is forced out of the lungs
Show the answer

Answer: A. thoracic volume increases and pressure falls

Thoracic volume increases and pressure falls: inspiration.

Q5. In human thermoregulation, hair lies flat occurs:

  1. when the body is too hot
  2. never in humans
  3. only during sleep
  4. when the body is too cold
Show the answer

Answer: A. when the body is too hot

Hair lies flat: when the body is too hot.

Q6. Which is a function of the liver?

  1. deamination of amino acids to form urea
  2. secretion of insulin and glucagon
  3. secretion of pancreatic juice
  4. secretion of HCl
Show the answer

Answer: A. deamination of amino acids to form urea

Deamination of amino acids to form urea: liver.

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