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Biology MCQs

93 Questions Subject Test
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Cell BiologyHuman PhysiologyGeneticsEcology
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41
Medium fpsc ppsc nts Uploaded: 05 Aug 2026

Which disease is caused by Mycobacterium tuberculosis primarily affecting the lungs?

  • A Typhoid
  • B Cholera
  • C Malaria
  • D Tuberculosis
Permalink
Correct Answer: Option D — Tuberculosis
Explanation: Tuberculosis is a bacterial infection caused by Mycobacterium tuberculosis primarily affecting the lungs and spread through airborne droplets making it one of the world's deadliest infectious diseases.
Submitted by: PaperMCQs
42
Easy ppsc nts Uploaded: 14 Jul 2026

What is the term for organisms that eat both plants and animals?

  • A Herbivores
  • B Omnivores
  • C Carnivores
  • D Detritivores
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Correct Answer: Option B — Omnivores
Explanation: Omnivores are organisms that consume both plant material and other animals obtaining energy and nutrients from a variety of food sources examples include humans bears and pigs.
Submitted by: PaperMCQs
43
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

Which part of the human brain controls balance and coordinates muscular movement?

  • A Cerebellum
  • B Cerebrum
  • C Medulla oblongata
  • D Thalamus
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Correct Answer: Option A — Cerebellum
Explanation: The cerebellum coordinates voluntary movements maintains balance and posture and fine-tunes motor activities by processing information from the sensory systems and other brain areas.
Submitted by: PaperMCQs
44
Medium nts Uploaded: 06 Aug 2026

What is the term for animals lacking a backbone?

  • A Vertebrates
  • B Mammals
  • C Amphibians
  • D Invertebrates
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Correct Answer: Option D — Invertebrates
Explanation: Invertebrates are animals without a vertebral column or backbone, comprising the vast majority of animal species on Earth. Examples include insects, mollusks, worms, and jellyfish, showing enormous diversity in form and habitat.
Submitted by: PaperMCQs
45
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What is the term for all the organisms of the same species living in the same area at the same time?

  • A Community
  • B Ecosystem
  • C Population
  • D Biome
Permalink
Correct Answer: Option C — Population
Explanation: A population is a group of individuals of the same species living in the same area at the same time who can interbreed and share genetic resources.
Submitted by: PaperMCQs
46
Easy fpsc ppsc nts Uploaded: 14 Jul 2026

What is the full form of DNA?

  • A Deoxyribose Nucleic Acid
  • B Di-nitrogen Acid
  • C Dinucleic Acid
  • D Deoxyribonucleic Acid
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Correct Answer: Option D — Deoxyribonucleic Acid
Explanation: DNA stands for Deoxyribonucleic Acid and is the molecule that carries the genetic instructions for the development functioning growth and reproduction of all known organisms.
Submitted by: PaperMCQs
47
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What happens to enzyme activity when temperature rises significantly above its optimum?

  • A Activity slows gradually then speeds up
  • B Activity remains constant
  • C Enzyme is denatured and loses activity
  • D Enzyme replicates to compensate
Permalink
Correct Answer: Option C — Enzyme is denatured and loses activity
Explanation: When temperature rises significantly above the optimum the enzyme is denatured meaning the active site changes shape so the substrate can no longer bind and activity is permanently lost.
Submitted by: PaperMCQs
48
Easy fpsc ppsc nts Uploaded: 14 Jul 2026

What is the site of protein synthesis in a cell?

  • A Ribosome
  • B Nucleus
  • C Mitochondria
  • D Golgi apparatus
Permalink
Correct Answer: Option A — Ribosome
Explanation: Ribosomes are the cellular organelles responsible for protein synthesis where mRNA sequences are translated into chains of amino acids following the genetic code during translation.
Submitted by: PaperMCQs
49
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

Which vitamin is essential for the clotting of blood?

  • A Vitamin A
  • B Vitamin C
  • C Vitamin E
  • D Vitamin K
Permalink
Correct Answer: Option D — Vitamin K
Explanation: Vitamin K is essential for blood clotting as it activates several clotting factors in the coagulation cascade and its deficiency can lead to excessive bleeding.
Submitted by: PaperMCQs
50
Easy fpsc ppsc nts Uploaded: 14 Jul 2026

What is the term for the movement of substances from high concentration to low concentration without energy?

  • A Active transport
  • B Osmosis
  • C Endocytosis
  • D Diffusion
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Correct Answer: Option D — Diffusion
Explanation: Diffusion is the passive movement of particles from a region of high concentration to low concentration down a concentration gradient without requiring cellular energy.
Submitted by: PaperMCQs
51
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

How many kingdoms are in the traditional five-kingdom system of classification?

  • A Three
  • B Five
  • C Four
  • D Six
Permalink
Correct Answer: Option B — Five
Explanation: The traditional five-kingdom system classifies all life into Monera Protista Fungi Plantae and Animalia based on cell type nutrition mode and body organisation.
Submitted by: PaperMCQs
52
Easy fpsc ppsc nts Uploaded: 14 Jul 2026

Which disease results from the inability to produce or use insulin effectively?

  • A Diabetes mellitus
  • B Hypertension
  • C Anaemia
  • D Asthma
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Correct Answer: Option A — Diabetes mellitus
Explanation: Diabetes mellitus results from insufficient insulin production or ineffective insulin utilisation leading to persistently high blood glucose levels that can damage organs over time.
Submitted by: PaperMCQs
53
Medium nts Uploaded: 06 Aug 2026

What is the term for organisms that can make their own food?

  • A Heterotrophs
  • B Autotrophs
  • C Decomposers
  • D Parasites
Permalink
Correct Answer: Option B — Autotrophs
Explanation: Autotrophs, such as green plants and some bacteria, synthesize their own organic compounds from inorganic substances using sunlight or chemical energy. They form the base of most food chains, supporting all other life forms.
Submitted by: PaperMCQs
54
Easy fpsc ppsc nts Uploaded: 14 Jul 2026

Which scientist is known as the Father of Genetics?

  • A Charles Darwin
  • B Gregor Mendel
  • C Louis Pasteur
  • D Aristotle
Permalink
Correct Answer: Option B — Gregor Mendel
Explanation: Gregor Mendel is known as the Father of Genetics for his pioneering experiments on pea plants in the 1860s that established the fundamental laws of heredity and trait inheritance.
Submitted by: PaperMCQs
55
Easy fpsc ppsc nts Uploaded: 14 Jul 2026

Which gas is released by organisms as a byproduct of cellular respiration?

  • A Carbon dioxide
  • B Oxygen
  • C Nitrogen
  • D Hydrogen
Permalink
Correct Answer: Option A — Carbon dioxide
Explanation: Carbon dioxide is released as a byproduct of cellular respiration when glucose is broken down to produce ATP and must be exhaled by animals or used by plants in photosynthesis.
Submitted by: PaperMCQs
56
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What is the deficiency disease caused by lack of Vitamin C?

  • A Beriberi
  • B Pellagra
  • C Scurvy
  • D Rickets
Permalink
Correct Answer: Option C — Scurvy
Explanation: Scurvy is caused by Vitamin C deficiency resulting in impaired collagen synthesis which leads to bleeding gums joint pain poor wound healing and weakness.
Submitted by: PaperMCQs
57
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What is the term for organisms that can make their own food through photosynthesis?

  • A Decomposers
  • B Consumers
  • C Heterotrophs
  • D Autotrophs
Permalink
Correct Answer: Option D — Autotrophs
Explanation: Autotrophs are organisms that produce their own organic food from inorganic substances using energy from sunlight through photosynthesis or from chemicals through chemosynthesis.
Submitted by: PaperMCQs
58
Easy fpsc ppsc nts Uploaded: 14 Jul 2026

Which organelle is known as the powerhouse of the cell?

  • A Nucleus
  • B Ribosome
  • C Mitochondria
  • D Golgi apparatus
Permalink
Correct Answer: Option C — Mitochondria
Explanation: Mitochondria are known as the powerhouse of the cell because they produce ATP through the process of cellular respiration providing energy for all cellular activities.
Submitted by: PaperMCQs
59
Easy fpsc ppsc nts Uploaded: 14 Jul 2026

Which type of disease is caused by a pathogen and can be transmitted from one person to another?

  • A Deficiency disease
  • B Communicable disease
  • C Genetic disease
  • D Degenerative disease
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Correct Answer: Option B — Communicable disease
Explanation: Communicable diseases are caused by pathogens such as bacteria viruses fungi or parasites and can be transmitted directly or indirectly from one person to another.
Submitted by: PaperMCQs
60
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What is the term for the symbiotic relationship where one organism benefits and the other is neither helped nor harmed?

  • A Mutualism
  • B Parasitism
  • C Amensalism
  • D Commensalism
Permalink
Correct Answer: Option D — Commensalism
Explanation: Commensalism is a symbiotic relationship where one organism benefits while the other is neither harmed nor helped such as barnacles attaching to whales for transport.
Submitted by: PaperMCQs
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