PES SS1 Biology (Obj) 2nd Term Exam 2025/2026
  • 1. Which part of the cell controls its activities?
A) Cytoplasm
B) Mitochondria
C) Cell membrane
D) Nucleus
  • 2. The jelly-like substance inside the cell is called
A) Ribosome
B) Cytoplasm
C) Vacuole
D) Nucleus
  • 3. The cell membrane is responsible for
A) Making proteins
B) Storing food
C) Producing energy
D) Controlling what enters and leaves the cell
  • 4. Which structure is only found in plant cells?
A) Nucleus
B) Mitochondria
C) Cytoplasm
D) Cell wall
  • 5. When a plant cell is placed in a hypotonic solution, it becomes
A) Plasmolysed
B) Dead
C) Turgid
D) Flaccid
  • 6. When a red blood cell is placed in distilled water, it will
A) Harden
B) Shrink
C) Burst
D) Remain the same
  • 7. Which of the following is used to kill micro-organisms on inanimate objects?
A) Antiseptics
B) Disinfectant
C) Antibiotics
D) Vaccine
  • 8. The process of heating milk to kill harmful bacteria is called
A) Pasteurization
B) Fermentation
C) Sterilization
D) Distillation
  • 9. Vaccination helps to
A) Destroy viruses directly
B) Prevent diseases by building immunity
C) Cure diseases instantly
D) Kill all micro-organisms
  • 10. Culturing in biology means
A) Growing micro-organisms under controlled conditions
B) Drying micro-organisms
C) Killing micro-organisms
D) Freezing micro-organisms
  • 11. Which of the following is a solid culture medium?
A) Water
B) Broth
C) Oil
D) Agar
  • 12. A Petri dish is used to
A) Store micro-organisms
B) Kill micro-organisms
C) Observe micro-organisms
D) Grow micro-organisms
  • 13. The process of transferring micro-organisms from one medium to another is called
A) Inoculation
B) Filtration
C) Incubation
D) Sterilization
  • 14. The skeleton is made up of
A) Blood and tissues
B) Bones and cartilage
C) Muscles only
D) Bones only
  • 15. The vertebral column protects the
A) Lungs
B) Heart
C) Brain
D) Spinal cord
  • 16. Muscles are attached to bones by
A) Ligaments
B) Joints
C) Tendons
D) Muscles
  • 17. Which type of joint is found in the shoulder?
A) Fixed joint
B) Pivot joint
C) Ball and socket joint
D) Hinge joint
  • 18. The elbow joint is an example of
A) Ball and socket joint
B) Hinge joint
C) Fixed joint
D) Pivot joint
  • 19. The study of crop plants is part of
A) Zoology
B) Genetics
C) Botany
D) Ecology
  • 20. Which of the following is a biological method of pest control?
A) Use of machines
B) Use of fire
C) Use of natural predators
D) Use of chemicals
  • 21. Which of the following is an example of a useful micro-organism in agriculture?
A) Fungus
B) Bacteria
C) Parasite
D) Virus
  • 22. Which of the following practices is based on biological knowledge?
A) Breeding and pest control
B) Irrigation
C) Use of pesticides
D) Building farmhouses
  • 23. The main substance broken down during respiration is
A) Fat
B) Vitamins
C) Glucose
D) Protein
  • 24. The gas taken in during aerobic respiration is
A) Oxygen
B) Nitrogen
C) Hydrogen
D) Carbon dioxide
  • 25. The energy released during respiration is stored in
A) ATP
B) RNA
C) Water
D) DNA
  • 26. The organelle where most respiration occurs is
A) Nucleus
B) Ribosome
C) Vacuole
D) Mitochondrion
  • 27. In humans, anaerobic respiration produces
A) Water
B) Alcohol
C) Carbon dioxide
D) Lactic acid
  • 28. Which of the following releases the most energy?
A) Anaerobic respiration
B) Diffusion
C) Fermentation
D) Aerobic respiration
  • 29. Growth in living organisms is defined as
A) Reproduction
B) Getting bigger
C) Movement from place to place
D) Increase in size and complexity
  • 30. Growth is a result of
A) Cell death
B) Movement
C) Respiration
D) Cell division and enlargement
  • 31. Irritability is the ability of an organism to
A) Respond to stimuli
B) Reproduce
C) Grow rapidly
D) Move randomly
  • 32. A stimulus is
A) A tissue
B) A nutrient
C) A type of cell
D) Any change in the environment
  • 33. Which of the following is an example of irritability?
A) A person sweating in heat
B) A seed germinating
C) A plant growing taller
D) A baby increasing in weight
  • 34. Response in biology refers to
A) Growth of organisms
B) Reaction to a stimulus
C) Feeding
D) Reproduction
  • 35. In which solution will there be no net movement of water?
A) Isotonic
B) Hypertonic
C) Hypotonic
D) Concentrated
  • 36. The environment surrounding a cell affects
A) Its survival and function
B) Nothing
C) Only its size
D) Only its shape
  • 37. The shrinkage of a plant cell in a hypertonic solution is called
A) Turgidity
B) Diffusion
C) Plasmolysis
D) Dehydration
  • 38. Which method uses high temperature to destroy micro-organisms?
A) Filtration
B) Drying
C) Boiling
D) Freezing
  • 39. A substance used to grow micro-organisms is called
A) Catalyst
B) Reagent
C) Medium
D) Indicator
  • 40. The period during which micro-organisms grow in a controlled environment is called
A) Incubation
B) Fermentation
C) Sterilization
D) Inoculation
Students who took this test also took :

Created with That Quiz — the math test generation site with resources for other subject areas.