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cet-science

Direction: Choose the correct answer.

1. In what organelle does cellular respiration take place?
a.  mitochondria
b.  Golgi aparatus
c.  ribosomes
d.  lysosomes

2. Where does human fertilization normally take place?
a.  abdomen
b.  uterus
c.  vagina
d.  fallopian tube

3. Which of the following is true in osmosis?
a.  It refers to the movement of water through a semipermeable membrane in the net direction from higher solute concentration to lower solute concentration.
b.  It refers to the movement of water through a semipermeable membrane in the net direction from lower solute concentration to higher solute concentration.
c.  It refers to the movement of dissolved or suspended particles in the net direction from higher particle concentration to lower particle concentration.
d.  It refers to the movement of dissolved or suspended particles in the net direction from lower particle concentration to higher particle concentration.

4. Which process of nuclear division produces sex cells in humans?
a.  meiosis
b.  mitosis
c.  copulation
d.  fertilization

5. In Whittaker's Five-Kingdom Scheme of Classification, to which kingdom does yeast belong?
a.  Protista
b.  Fungi
c.  Plantae
d.  Monera

6. Which of the following is NOT a part of Darwin's evolution theory?
a.  Not all individuals can survive and reproduce.
b.  Individuals display variations in their characteristics.
c.  Individuals with certain characterisitcs, some of which are heritable, have a better chance of survival and reproduction.
d.  The hereditary factor must exist as separate entities in the cell.

7. Which biological interaction is demonstrated by the association of fungi and algae in lichens?
a.  mutualism
b.  parasitism
c.  sacrophytism
d.  commensalism

8. A glass of water turns blue when a drop of blue ink is added. Which explains this phenomenon?
a.  active transport
b.  facilitated diffusion
c.  simple diffusion
d.  osmosis

9. What is the unit of inheritance?
a.  nucleic acids
b.  adenosine triphosphate
c.  gene
d.  nucleotides

10. Which term is appropriate for the sequence: grasses→insects→chickens→boa constrictor?
a.  carbon cycle
b.  Krebs cycle
c.  food web
d.  food chain

11. Which of the following is NOT required in photosynthesis?
a.  carbon dioxide
b.  chlorophyll
c.  sunlight
d.  oxygen

12. What do you call the process of the release of energy by oxidation of ATP?
a.  anabolism
b.  cellular respiration
c.  Krebs cycle
d.  excretion

13. Where does protein digestion start?
a.  stomach
b.  bile tract
c.  esophagus
d.  mouth

14. What kind of organism is capable of manufacturing organic compounds from inorganic raw materials?
a.  autotrophic
b.  heterotrophic
c.  herbivore
d.  carnivore

15. Which polysaccharide is typically found in plants?
a.  starch
b.  sucrose
c.  fructose
d.  glycogen

16. Which of the following poduces a cell that is not identical to either parents but have characteristics of both?
a.  budding
b.  cloning
c.  asexual reproduction
d.  sexual reproduction

17. Which of the following is NOT a characteristic of prokaryotic cells?
a.  The cell may contain chlorophyll in chloroplasts.
b.  There is no nuclear membrane.
c.  The cell does not contain mitochondria.
d.  The cell does not contain endoplasmic reticulum.

18. What is the sum total of physical features and organisms occurring in a given area?
a.  ecosystem
b.  ecology
c.  biosphere
d.  stratosphere

19. Homo sapiens is the scientific name of humans. To what does sapiens refer?
a.  family
b.  class
c.  species
d.  genus

20. Which structure is present in plants only?
a.  cell membrane and chloroplasts
b.  cell wall and chloroplasts
c.  chloroplasts and mitochondria
d.  vacuole and cell membrane

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