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Biology MCQs

56 Questions Subject Test
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Build a clear understanding of living organisms, cells, genetics, human systems and the environment through carefully selected practice questions.

Cell BiologyHuman PhysiologyGeneticsEcology
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Easy fpsc ppsc nts Uploaded: 14 Jul 2026

Which scientist is known as the Father of Biology?

  • A Charles Darwin
  • B Gregor Mendel
  • C Aristotle
  • D Louis Pasteur
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Correct Answer: Option C — Aristotle
Explanation: Aristotle is widely regarded as the Father of Biology for his systematic study and classification of living organisms in ancient Greece making him the first to create a scientific framework for biology.
Submitted by: PaperMCQs
22
Easy ppsc Uploaded: 06 Aug 2026

Which process describes the movement of water across a semipermeable membrane?

  • A Diffusion
  • B Osmosis
  • C Active transport
  • D Filtration
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Correct Answer: Option B — Osmosis
Explanation: Osmosis is the passive movement of water molecules from a region of lower solute concentration to higher solute concentration across a semipermeable membrane. This process is vital for maintaining cell shape and fluid balance.
Submitted by: PaperMCQs
23
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
24
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
25
Easy fpsc Uploaded: 06 Aug 2026

Which blood vessels carry oxygenated blood away from the heart?

  • A Veins
  • B Capillaries
  • C Arteries
  • D Venules
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Correct Answer: Option C — Arteries
Explanation: Arteries typically carry oxygen-rich blood away from the heart to tissues throughout the body, with the notable exception of the pulmonary artery. Their thick, muscular walls withstand the high pressure generated by heart contractions.
Submitted by: PaperMCQs
26
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
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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
27
Easy css Uploaded: 06 Aug 2026

Which molecule carries genetic information in most organisms?

  • A RNA
  • B Protein
  • C Lipid
  • D DNA
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Correct Answer: Option D — DNA
Explanation: DNA (deoxyribonucleic acid) stores hereditary information in a double helix structure made of nucleotide bases. It is passed from parents to offspring and directs the synthesis of proteins through transcription and translation processes.
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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
29
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.
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30
Easy css Uploaded: 06 Aug 2026

What is the term for the process by which plants make their own food using light energy?

  • A Respiration
  • B Fermentation
  • C Photosynthesis
  • D Digestion
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Correct Answer: Option C — Photosynthesis
Explanation: Photosynthesis is the process by which green plants and some other organisms convert light energy, carbon dioxide, and water into glucose and oxygen. It occurs mainly in chloroplasts and sustains most life on Earth.
Submitted by: PaperMCQs
31
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
32
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
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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
33
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
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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
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Easy css Uploaded: 06 Aug 2026

What is the term for the loss of biodiversity due to species dying out completely?

  • A Migration
  • B Extinction
  • C Adaptation
  • D Hibernation
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Correct Answer: Option B — Extinction
Explanation: Extinction occurs when a species completely disappears from Earth, often due to habitat loss, climate change, or human activity. Once extinct, a species and its unique genetic contributions to biodiversity are permanently lost.
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35
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.
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Easy css Uploaded: 06 Aug 2026

Which molecule is the primary source of energy for most cellular activities?

  • A Protein
  • B DNA
  • C Glucose
  • D Cholesterol
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Correct Answer: Option C — Glucose
Explanation: Glucose is a simple sugar broken down during cellular respiration to release energy stored in its chemical bonds. This energy is captured as ATP, which powers essential cellular functions including movement, growth, and repair.
Submitted by: PaperMCQs
37
Easy fpsc ppsc nts Uploaded: 14 Jul 2026

What is the scientific study of heredity and genetic variation called?

  • A Ecology
  • B Biochemistry
  • C Genetics
  • D Cytology
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Correct Answer: Option C — Genetics
Explanation: Genetics is the branch of biology that studies heredity and genetic variation in organisms exploring how traits are passed from parents to offspring through genes.
Submitted by: PaperMCQs
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Easy fpsc ppsc nts Uploaded: 14 Jul 2026

How many chambers does the human heart have?

  • A Two
  • B Three
  • C Four
  • D Five
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Correct Answer: Option C — Four
Explanation: The human heart has four chambers two upper atria that receive blood and two lower ventricles that pump blood ensuring separation of oxygenated and deoxygenated blood.
Submitted by: PaperMCQs
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Easy ppsc Uploaded: 06 Aug 2026

What is the term for organisms that break down dead organic matter?

  • A Producers
  • B Consumers
  • C Decomposers
  • D Predators
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Correct Answer: Option C — Decomposers
Explanation: Decomposers, including fungi and bacteria, break down dead plants and animals into simpler substances, recycling nutrients back into the ecosystem. Without decomposers, nutrients would remain locked in organic matter, disrupting ecological balance.
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40
Easy fpsc ppsc nts Uploaded: 14 Jul 2026

What is the process by which green plants make their own food using sunlight?

  • A Respiration
  • B Transpiration
  • C Photosynthesis
  • D Fermentation
Permalink
Correct Answer: Option C — Photosynthesis
Explanation: Photosynthesis is the process by which green plants use sunlight carbon dioxide and water to produce glucose and oxygen in chloroplasts through light-dependent and light-independent reactions.
Submitted by: PaperMCQs
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