SS 2 Biology 3rd Test
  • 1. Diffusion is the movement of particles from an area of ______ concentration to an area of ______ concentration.
A) lower, higher
B) equal, equal
C) none of the above
D) higher, lower
  • 2. Which of the following states of matter does diffusion occur in?
A) All of the above
B) Solid
C) Liquid
D) Gas
  • 3. Osmosis is the movement of ______ molecules across a selectively permeable membrane.
A) Carbondioxide
B) Water
C) Glucose
D) Oxygen
  • 4. Which of the following phenomena is NOT related to osmosis?
A) Flaccidity
B) Haemolysis
C) Plasmolysis
D) Turgidity
  • 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) Turgidity
C) Osmosis
D) Diffusion
  • 6. Which of the following is an example of a beneficial microorganism?
A) Virus causing the flu
B) Bacteria causing pneumonia
C) Fungi causing athlete's foot
D) Bacteria aiding in digestion
  • 7. Which of the following is NOT a mode of transmission for diseases caused by microorganisms?
A) Vector-borne
B) Genetic inheritance
C) Waterborne
D) Airborne
  • 8. HIV stands for:
A) Human Intestinal Virus
B) Human Immunodeficiency Virus
C) Human Influenza Virus
D) Highly Infectious Virus
  • 9. Which of the following is a symptom of HIV?
A) Skin rash
B) Fatigue
C) Persistent cough
D) All of the above
  • 10. The maintenance of good health involves:
A) All of the above
B) Proper nutrition
C) Adequate sleep
D) Regular exercise
  • 11. Which organization is responsible for coordinating international public health efforts?
A) UNICEF (United Nations Children's Fund)
B) NMA (National Medical Association)
C) Red Cross Society
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) Decomposing organic matter
C) Chemosynthesis
D) Consuming other organisms
  • 14. Which of the following represents a trophic level in a food chain?
A) Secondary consumers
B) Producers
C) Primary consumers
D) All of the above
  • 15. The energy flow along trophic levels can be represented by a:
A) All of the above
B) Pyramid of Energy
C) Pyramid of Biomass
D) Pyramid of Number
  • 16. Plasmolysis occurs when a plant cell:
A) None of the above
B) Gains water and becomes turgid
C) Loses water and becomes flaccid
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) Virus causing the common cold
C) Bacteria causing food poisoning
D) Mosquito transmitting malaria
  • 18. Which of the following is NOT a way to control vectors?
A) Use of insecticides
B) Elimination of breeding sites
C) Use of bed nets
D) Vaccination
  • 19. Which of the following is NOT a role of the Red Cross Society?
A) Promoting health education
B) Blood donation and transfusion services
C) Conducting medical research
D) Providing humanitarian aid during disasters
  • 20. Decomposers play a crucial role in ecosystems by:
A) None of the above
B) Providing food for other organisms
C) Breaking down dead organic matter
D) Producing oxygen through photosynthesis
  • 21. The first process of glycolysis begins with the phosphorylation of glucose to ......
A) Pyruvic acid
B) glucose -6-phosphate
C) Acetyl coenzyme A
D) Oxaloacetic acid
  • 22. The resting phase of the cell in mitosis is .......
A) Telophase
B) Interphase
C) Metaphase
D) Anaphase
  • 23. Kreb's cycle is also called........
A) Carboxylic acid cycle
B) Tricarboxylic acid cycle
C) Glycolysis
D) Acetyl co A cycle
  • 24. When the surrounding solution is concentrated that the solution in the cell, the solution is said to be .........
A) Hypnotonic
B) Hypotonic
C) Hypertonic
D) Isotonic
  • 25. The following are factors affecting diffusion except..........
A) Size of container
B) Temperature
C) Surface area
D) Size of particules
  • 26. Which of the following cell organelles is responsible for the packaging and distribution of materials?
A) Vacuole
B) Golgi bodies
C) Nucleolus
D) Lysosome
  • 27. .......... contains the DNA which stores genetic traits.
A) Centrioles
B) Endoplasmic reticulum
C) Chromosomes
D) Mitochondria
  • 28. In the laboratory, turbidity can be measured with a ..............
A) Spectrophotometer
B) Turbidometer
C) Speedometry
D) Geiger muller counter
  • 29. Organisms referred to as causative agents and disease-inducing micro-organisms are......
A) Antibodies
B) Pathogens
C) Vectors
D) Antigens
  • 30. Animal diseases caused by protozoa are the following except ......
A) Coccidiosis
B) Trichomoniasis
C) Trypanosomiasis
D) Gummosis
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