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Biology MCQs

82 Questions Subject Test
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Cell BiologyHuman PhysiologyGeneticsEcology
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21
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

Which part of the brain controls vital involuntary functions such as breathing heart rate and blood pressure?

  • A Cerebrum
  • B Cerebellum
  • C Thalamus
  • D Medulla oblongata
22
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What is the term for all the populations of different species living and interacting in the same area?

  • A Community
  • B Population
  • C Biosphere
  • D Ecosystem
23
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

Who discovered the double helix structure of DNA?

  • A Charles Darwin and Gregor Mendel
  • B Robert Hooke and Anton van Leeuwenhoek
  • C James Watson and Francis Crick
  • D Louis Pasteur and Robert Koch
24
Medium css fpsc ppsc Uploaded: 14 Jul 2026

Which type of RNA brings amino acids to the ribosome during protein synthesis?

  • A mRNA
  • B rRNA
  • C tRNA
  • D snRNA
25
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What is the term for a substance that triggers an immune response in the body?

  • A Antibody
  • B Enzyme
  • C Antigen
  • D Hormone
26
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What is the function of the Golgi apparatus in a cell?

  • A Energy production
  • B Protein synthesis
  • C DNA replication
  • D Modifying packaging and dispatching proteins
27
Medium css fpsc ppsc Uploaded: 14 Jul 2026

What is the term for the variety of life on Earth including all species ecosystems and genetic variation?

  • A Evolution
  • B Biodiversity
  • C Ecology
  • D Taxonomy
28
Medium fpsc ppsc nts Uploaded: 05 Aug 2026

What is the term for organisms that maintain a stable internal environment despite external changes?

  • A Homeostasis
  • B Adaptation
  • C Metabolism
  • D Evolution
29
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

Which type of tissue in plants transports water and minerals from roots to leaves?

  • A Phloem
  • B Cambium
  • C Epidermis
  • D Xylem
30
Medium css fpsc ppsc Uploaded: 14 Jul 2026

What is the term for a permanent change in the DNA sequence of an organism?

  • A Mutation
  • B Adaptation
  • C Variation
  • D Allele
31
Medium css fpsc ppsc Uploaded: 14 Jul 2026

What is the term for the physical appearance or observable characteristics of an organism?

  • A Genome
  • B Genotype
  • C Karyotype
  • D Phenotype
32
Medium css fpsc ppsc Uploaded: 05 Aug 2026

Which layer of the skin contains melanocytes that produce the pigment responsible for skin colour?

  • A Dermis
  • B Hypodermis
  • C Stratum corneum
  • D Epidermis
33
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

Which disease is caused by the deficiency of Vitamin B1 affecting the nervous and cardiovascular systems?

  • A Beriberi
  • B Scurvy
  • C Pellagra
  • D Rickets
34
Medium fpsc Uploaded: 06 Aug 2026

What is the process by which a caterpillar transforms into a butterfly called?

  • A Metamorphosis
  • B Germination
  • C Fertilization
  • D Pollination
35
Medium css fpsc ppsc Uploaded: 14 Jul 2026

What is the term for the gradual process of change in the species composition of an ecosystem over time?

  • A Evolution
  • B Adaptation
  • C Migration
  • D Ecological succession
36
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What is the term for organisms that cannot make their own food and must consume other organisms?

  • A Autotrophs
  • B Heterotrophs
  • C Producers
  • D Chemotrophs
37
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What is the role of enzymes in biological reactions?

  • A Act as biological catalysts to speed up reactions
  • B Store genetic information
  • C Provide energy for reactions
  • D Transport oxygen in blood
38
Medium css fpsc ppsc Uploaded: 14 Jul 2026

Which type of immunity is present from birth and provides a non-specific first line of defence?

  • A Acquired immunity
  • B Active immunity
  • C Passive immunity
  • D Innate immunity
39
Medium css fpsc ppsc Uploaded: 14 Jul 2026

Which molecule is the primary energy currency of cells?

  • A ATP
  • B ADP
  • C NAD
  • D NADP
40
Medium fpsc ppsc nts Uploaded: 05 Aug 2026

Which part of the eye is the coloured ring that controls pupil size regulating light entry?

  • A Cornea
  • B Retina
  • C Iris
  • D Lens
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