SS 2 Biology 1st Term Exam 23/24
  • 1. Diffusion is the movement of particles from an area of ______ concentration to an area of ______ concentration.
A) equal, equal
B) none of the above
C) higher, lower
D) lower, higher
  • 2. Which of the following states of matter does diffusion occur in?
A) Liquid
B) Solid
C) All of the above
D) Gas
  • 3. Osmosis is the movement of ______ molecules across a selectively permeable membrane.
A) Glucose
B) Carbondioxide
C) Oxygen
D) Water
  • 4. Which of the following phenomena is NOT related to osmosis?
A) Turgidity
B) Haemolysis
C) Plasmolysis
D) Flaccidity
  • 5. The process of water moving from an area of lower solute concentration to an area of higher solute concentration is called:
A) Plasmolysis
B) Osmosis
C) Turgidity
D) Diffusion
  • 6. Which of the following is an example of a beneficial microorganism?
A) Bacteria causing pneumonia
B) Fungi causing athlete's foot
C) Bacteria aiding in digestion
D) Virus causing the flu
  • 7. Which of the following is NOT a mode of transmission for diseases caused by microorganisms?
A) Waterborne
B) Airborne
C) Genetic inheritance
D) Vector-borne
  • 8. HIV stands for:
A) Highly Infectious Virus
B) Human Influenza Virus
C) Human Intestinal Virus
D) Human Immunodeficiency Virus
  • 9. Which of the following is a symptom of HIV?
A) Persistent cough
B) Fatigue
C) All of the above
D) Skin rash
  • 10. The maintenance of good health involves:
A) Adequate sleep
B) All of the above
C) Regular exercise
D) Proper nutrition
  • 11. Which organization is responsible for coordinating international public health efforts?
A) Red Cross Society
B) UNICEF (United Nations Children's Fund)
C) NMA (National Medical Association)
D) WHO (World Health Organization)
  • 12. Autotrophs are organisms that:
A) Break down dead organic matter
B) Produce their own food
C) None of the above
D) Depend on other organisms for food
  • 13. Heterotrophs obtain their food by:
A) Photosynthesis
B) Consuming other organisms
C) Chemosynthesis
D) Decomposing organic matter
  • 14. Which of the following represents a trophic level in a food chain?
A) Producers
B) All of the above
C) Secondary consumers
D) Primary consumers
  • 15. The energy flow along trophic levels can be represented by a:
A) Pyramid of Number
B) Pyramid of Energy
C) All of the above
D) Pyramid of Biomass
  • 16. Plasmolysis occurs when a plant cell:
A) Bursts due to excessive water intake
B) None of the above
C) Loses water and becomes flaccid
D) Gains water and becomes turgid
  • 17. Which of the following is an example of a vector?
A) Virus causing the common cold
B) Fungi causing athlete's foot
C) Bacteria causing food poisoning
D) Mosquito transmitting malaria
  • 18. Which of the following is NOT a way to control vectors?
A) Vaccination
B) Elimination of breeding sites
C) Use of insecticides
D) Use of bed nets
  • 19. Which of the following is NOT a role of the Red Cross Society?
A) Promoting health education
B) Conducting medical research
C) Blood donation and transfusion services
D) Providing humanitarian aid during disasters
  • 20. Decomposers play a crucial role in ecosystems by:
A) None of the above
B) Producing oxygen through photosynthesis
C) Breaking down dead organic matter
D) Providing food for other organisms
  • 21. The first process of glycolysis begins with the phosphorylation of glucose to ......
A) glucose -6-phosphate
B) Acetyl coenzyme A
C) Oxaloacetic acid
D) Pyruvic acid
  • 22. The resting phase of the cell in mitosis is .......
A) Metaphase
B) Anaphase
C) Telophase
D) Interphase
  • 23. Kreb's cycle is also called........
A) Glycolysis
B) Carboxylic acid cycle
C) Acetyl co A cycle
D) Tricarboxylic acid cycle
  • 24. When the surrounding solution is concentrated that the solution in the cell, the solution is said to be .........
A) Hypotonic
B) Isotonic
C) Hypertonic
D) Hypnotonic
  • 25. The following are factors affecting diffusion except..........
A) Temperature
B) Size of container
C) Surface area
D) Size of particules
  • 26. Which of the following cell organelles is responsible for the packaging and distribution of materials?
A) Golgi bodies
B) Lysosome
C) Vacuole
D) Nucleolus
  • 27. .......... contains the DNA which stores genetic traits.
A) Chromosomes
B) Endoplasmic reticulum
C) Mitochondria
D) Centrioles
  • 28. In the laboratory, turbidity can be measured with a ..............
A) Geiger muller counter
B) Spectrophotometer
C) Turbidometer
D) Speedometry
  • 29. Organisms referred to as causative agents and disease-inducing micro-organisms are......
A) Antibodies
B) Vectors
C) Pathogens
D) Antigens
  • 30. Animal diseases caused by protozoa are the following except ......
A) Trichomoniasis
B) Gummosis
C) Trypanosomiasis
D) Coccidiosis
  • 31. Which process involves the division of a single cell into two identical daughter cells?
A) Cell differentiation
B) Cell enlargement
C) Mitosis
D) Meiosis
  • 32. Which type of growth occurs at the tips of roots and shoots, leading to an increase in length?
A) Mitotic growth
B) Apical growth
C) Meiotic growth
D) Auxiliary growth
  • 33. Which of the following is responsible for regulating growth in plants?
A) Enzymes
B) Hormones
C) Nutrients
D) Sunlight
  • 34. What is the process by which cells convert glucose and oxygen into carbon dioxide, water, and energy?
A) Fermentation
B) Cellular respiration
C) Glycolysis
D) Photosynthesis
  • 35. Which process of cellular respiration occurs in the presence of oxygen and involves the breakdown of glucose?
A) Catabolism
B) Fermentation
C) Anaerobic respiration
D) Kreb's cycle
  • 36. What is the first step of anaerobic respiration, where glucose is converted into pyruvate?
A) Fermentation
B) Kreb's cycle
C) Glycolysis
D) Electron transport chain
  • 37. Which process of cellular respiration produces the most energy in the form of ATP?
A) Catabolism
B) Aerobic respiration
C) Glycolysis
D) Fermentation
  • 38. What is the primary source of energy released during cellular respiration?
A) Oxygen
B) Water
C) Glucose
D) Carbon dioxide
  • 39. Which of the following is the correct equation for aerobic respiration?
A) Oxygen + Water + Energy → Glucose + Carbon dioxide
B) Glucose + Water + Energy → Carbon dioxide + Oxygen
C) Glucose + Oxygen → Carbon dioxide + Water + Energy
D) Carbon dioxide + Water + Energy → Glucose + Oxygen
  • 40. Which process occurs in the absence of oxygen and results in the production of lactic acid or ethanol?
A) Aerobic respiration
B) Kreb's cycle
C) Catabolism
D) Fermentation
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