SS 2 Biology 1st Term 3rd Test 25/26
  • 1. Diffusion is the movement of particles from an area of ______ concentration to an area of ______ concentration.
A) higher, lower
B) lower, higher
C) none of the above
D) equal, equal
  • 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) Oxygen
B) Glucose
C) Water
D) Carbondioxide
  • 4. Which of the following phenomena is NOT related to osmosis?
A) Haemolysis
B) Turgidity
C) Flaccidity
D) Plasmolysis
  • 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) Diffusion
C) Osmosis
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) Airborne
B) Waterborne
C) Vector-borne
D) Genetic inheritance
  • 8. HIV stands for:
A) Highly Infectious Virus
B) Human Immunodeficiency Virus
C) Human Influenza Virus
D) Human Intestinal Virus
  • 9. Which of the following is a symptom of HIV?
A) Fatigue
B) Skin rash
C) Persistent cough
D) All of the above
  • 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) 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) 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) Secondary consumers
D) Primary consumers
  • 15. The energy flow along trophic levels can be represented by a:
A) Pyramid of Biomass
B) All of the above
C) Pyramid of Number
D) Pyramid of Energy
  • 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) 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) Use of bed nets
D) Elimination of breeding sites
  • 19. Which of the following is NOT a role of the Red Cross Society?
A) Providing humanitarian aid during disasters
B) Blood donation and transfusion services
C) Conducting medical research
D) Promoting health education
  • 20. Decomposers play a crucial role in ecosystems by:
A) None of the above
B) Breaking down dead organic matter
C) Providing food for other organisms
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) Oxaloacetic acid
D) Acetyl coenzyme A
  • 22. The resting phase of the cell in mitosis is .......
A) Telophase
B) Anaphase
C) Interphase
D) Metaphase
  • 23. Kreb's cycle is also called........
A) Acetyl co A cycle
B) Glycolysis
C) Carboxylic acid 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) Isotonic
B) Hypertonic
C) Hypotonic
D) Hypnotonic
  • 25. The following are factors affecting diffusion except..........
A) Size of container
B) Surface area
C) Temperature
D) Size of particules
  • 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) Centrioles
B) Mitochondria
C) Endoplasmic reticulum
D) Chromosomes
  • 28. In the laboratory, turbidity can be measured with a ..............
A) Spectrophotometer
B) Speedometry
C) Geiger muller counter
D) Turbidometer
  • 29. Organisms referred to as causative agents and disease-inducing micro-organisms are......
A) Antibodies
B) Vectors
C) Antigens
D) Pathogens
  • 30. Animal diseases caused by protozoa are the following except ......
A) Gummosis
B) Trypanosomiasis
C) Coccidiosis
D) Trichomoniasis
  • 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) Mitotic growth
C) Meiotic growth
D) Apical growth
  • 33. Which of the following is responsible for regulating growth in plants?
A) Sunlight
B) Nutrients
C) Enzymes
D) Hormones
  • 34. What is the process by which cells convert glucose and oxygen into carbon dioxide, water, and energy?
A) Fermentation
B) Glycolysis
C) Cellular respiration
D) Photosynthesis
  • 35. Which process of cellular respiration occurs in the presence of oxygen and involves the breakdown of glucose?
A) Fermentation
B) Kreb's cycle
C) Anaerobic respiration
D) Catabolism
  • 36. What is the first step of anaerobic respiration, where glucose is converted into pyruvate?
A) Fermentation
B) Electron transport chain
C) Kreb's cycle
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) Oxygen
B) Water
C) Carbon dioxide
D) Glucose
  • 39. Which of the following is the correct equation for aerobic respiration?
A) Glucose + Water + Energy → Carbon dioxide + Oxygen
B) Oxygen + Water + Energy → Glucose + Carbon dioxide
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) Fermentation
B) Catabolism
C) Aerobic respiration
D) Kreb's cycle
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