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Biology MCQs

121 Questions Subject Test
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Cell BiologyHuman PhysiologyGeneticsEcology
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What is the powerhouse process that produces ATP called?

  • A Photosynthesis
  • B Fermentation
  • C Cellular respiration
  • D Osmosis
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Which molecule carries genetic information from DNA to ribosomes for protein synthesis?

  • A mRNA
  • B tRNA
  • C rRNA
  • D snRNA
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What is the term for the study of interactions between organisms and their environment?

  • A Ecology
  • B Genetics
  • C Taxonomy
  • D Physiology
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Which chromosomal disorder is caused by the presence of an extra chromosome 21?

  • A Turner syndrome
  • B Down syndrome
  • C Klinefelter syndrome
  • D Patau syndrome
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Which vitamin is essential for the formation of collagen and acts as an antioxidant?

  • A Vitamin A
  • B Vitamin C
  • C Vitamin D
  • D Vitamin K
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What is the process by which species change over time through natural selection?

  • A Adaptation
  • B Evolution
  • C Mutation
  • D Speciation
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Which type of joint allows the widest range of movement in the human body?

  • A Ball and socket joint
  • B Hinge joint
  • C Pivot joint
  • D Fixed joint
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Medium fpsc ppsc nts Uploaded: 05 Aug 2026

Which type of muscle is under voluntary control and attached to bones to enable movement?

  • A Cardiac muscle
  • B Skeletal muscle
  • C Smooth muscle
  • D Involuntary muscle
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Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What is the term for the bending of a plant toward light called?

  • A Geotropism
  • B Phototropism
  • C Hydrotropism
  • D Thigmotropism
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What is the term for the division of the cell nucleus that results in two genetically identical daughter cells?

  • A Meiosis
  • B Fertilization
  • C Fission
  • D Mitosis
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What is the term for the total genetic material present in an organism?

  • A Genotype
  • B Genome
  • C Phenotype
  • D Karyotype
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What is the term for the symbiotic relationship where both organisms benefit?

  • A Commensalism
  • B Parasitism
  • C Mutualism
  • D Amensalism
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Which part of the human ear is responsible for maintaining balance?

  • A Cochlea
  • B Eardrum
  • C Ear lobe
  • D Semicircular canals
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What is the term for an organism that carries a recessive allele but does not show the trait?

  • A Dominant
  • B Carrier
  • C Homozygous
  • D Heterozygous
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Which blood group is known as the universal donor?

  • A AB positive
  • B A negative
  • C B negative
  • D O negative
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Which vitamin deficiency causes the disease scurvy?

  • A Vitamin A
  • B Vitamin B12
  • C Vitamin C
  • D Vitamin D
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Which disease is caused by Mycobacterium tuberculosis primarily affecting the lungs?

  • A Typhoid
  • B Cholera
  • C Malaria
  • D Tuberculosis
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What is the term for the maximum population size an environment can sustainably support?

  • A Carrying capacity
  • B Population density
  • C Biomass
  • D Growth rate
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What is the term for a change in the DNA sequence of an organism?

  • A Replication
  • B Transcription
  • C Mutation
  • D Translation
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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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