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) Liquid
B) Gas
C) All of the above
D) Solid
  • 3. Osmosis is the movement of ______ molecules across a selectively permeable membrane.
A) Water
B) Glucose
C) Oxygen
D) Carbondioxide
  • 4. Which of the following phenomena is NOT related to osmosis?
A) Plasmolysis
B) Turgidity
C) Flaccidity
D) Haemolysis
  • 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) Diffusion
C) Osmosis
D) Turgidity
  • 6. Which of the following is an example of a beneficial microorganism?
A) Bacteria aiding in digestion
B) Bacteria causing pneumonia
C) Fungi causing athlete's foot
D) Virus causing the flu
  • 7. Which of the following is NOT a mode of transmission for diseases caused by microorganisms?
A) Airborne
B) Genetic inheritance
C) Vector-borne
D) Waterborne
  • 8. HIV stands for:
A) Human Influenza Virus
B) Human Intestinal Virus
C) Highly Infectious 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) Proper nutrition
D) Regular exercise
  • 11. Which organization is responsible for coordinating international public health efforts?
A) Red Cross Society
B) NMA (National Medical Association)
C) UNICEF (United Nations Children's Fund)
D) WHO (World Health Organization)
  • 12. Autotrophs are organisms that:
A) Depend on other organisms for food
B) None of the above
C) Break down dead organic matter
D) Produce their own food
  • 13. Heterotrophs obtain their food by:
A) Decomposing organic matter
B) Chemosynthesis
C) Photosynthesis
D) Consuming other organisms
  • 14. Which of the following represents a trophic level in a food chain?
A) Producers
B) All of the above
C) Primary consumers
D) Secondary consumers
  • 15. The energy flow along trophic levels can be represented by a:
A) Pyramid of Biomass
B) Pyramid of Energy
C) Pyramid of Number
D) All of the above
  • 16. Plasmolysis occurs when a plant cell:
A) Gains water and becomes turgid
B) Loses water and becomes flaccid
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) Use of insecticides
B) Vaccination
C) Elimination of breeding sites
D) Use of bed nets
  • 19. Which of the following is NOT a role of the Red Cross Society?
A) Blood donation and transfusion services
B) Promoting health education
C) Conducting medical research
D) Providing humanitarian aid during disasters
  • 20. Decomposers play a crucial role in ecosystems by:
A) Producing oxygen through photosynthesis
B) None of the above
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) Pyruvic acid
B) glucose -6-phosphate
C) Oxaloacetic acid
D) Acetyl coenzyme A
  • 22. The resting phase of the cell in mitosis is .......
A) Telophase
B) Interphase
C) Anaphase
D) Metaphase
  • 23. Kreb's cycle is also called........
A) Tricarboxylic acid cycle
B) Acetyl co A cycle
C) Glycolysis
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) Hypotonic
C) Hypnotonic
D) Isotonic
  • 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) Nucleolus
B) Lysosome
C) Golgi bodies
D) Vacuole
  • 27. .......... contains the DNA which stores genetic traits.
A) Endoplasmic reticulum
B) Mitochondria
C) Chromosomes
D) Centrioles
  • 28. In the laboratory, turbidity can be measured with a ..............
A) Geiger muller counter
B) Speedometry
C) Turbidometer
D) Spectrophotometer
  • 29. Organisms referred to as causative agents and disease-inducing micro-organisms are......
A) Antibodies
B) Antigens
C) Vectors
D) Pathogens
  • 30. Animal diseases caused by protozoa are the following except ......
A) Gummosis
B) Trypanosomiasis
C) Coccidiosis
D) Trichomoniasis
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