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