QUESTION 1
1.1 Answer the following multiple-choice questions by choosing the most appropriate
answer. Write down only the letter of your choice. Example 1.1.11 A
1.1.1 Phylum of organisms that have nematocysts:
A Annelida
B Arthropoda
C Platyhelminthes
D Cnidaria
1.1.2 The following are characteristics of different plant groups:
(i) Vascular tissue
(ii) Seeds
(iii) Flowers
(iv) True leaves and roots
Which combination of features are typical of Gymnosperms?
A (i), (ii), (iii) and (iv)
B (i), (ii) and (iv)
C (i) and (iv)
D (ii), (iii) and (iv)
1.1.3 Form in which excess glucose is stored in the body:
A Glycogen
B Starch
C Urea
D Glucagon
1.1.4 When testing a leaf for starch, the leaf is boiled in alcohol to…
A dissolve the cytoplasm.
B remove the starch.
C remove the chlorophyll.
D stop metabolic processes.
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, 1.1.5 The following are involved in the process of cellular respiration:
1. Energy
2. Carbohydrates
3. Carbon dioxide
4. Water
5. Oxygen
Which ONE of the following equations correctly represents their involvement in
the above process?
A 2+3→1+4+5
B 2+4→1+3+5
C 1+2→3+4+5
D 2 + 5 →1 + 3 + 4
1.1.6 An investigation was carried out to test the effectiveness of four anti-fungal
treatments on preventing the growth of yeast. The results are shown in the
diagram below.
Which of the following is a correct conclusion made from the results?
A All anti-fungal treatments are equally effective.
B Mycoban is more effective than Fungiclear
C Fungisan can destroy yeast.
D Mycocide is most effective and Fungisan is least effective.
1.1.7 During anaerobic respiration in yeast cells…
A free oxygen is produced.
B alcohol is produced.
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, C a large amount of energy is produced.
D lactic acid is produced.
1.1.8 The chemical digestion of proteins in humans start in the...
A stomach
B mouth
C oesophagus
D small intestine.
1.1.9 The role of antigens in the body’s defense against disease:
A To bind to invading pathogens.
B To trigger tan immune response.
C To inactivate invading antibodies.
D To suppress the inflammation response.
1.1.10 The graph below shows the results of an investigation into the effect of carbon
dioxide concentration on the rate of photosynthesis. The investigation was carried
out under conditions of bright light. It was then repeated, using the same materials
and under the same conditions, but in light of medium intensity.
Y.
Rate of photosynthesis
X. bright light
Z.
medium light
Carbon dioxide concentration
What factor was limiting the rate of photosynthesis during the period marked X?
A Carbon dioxide
B Light
C Temperature
D Water
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