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