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Cell membrane.
Cytoplasm.
Nucleus.
Belan answered the question on March 8, 2019 at 15:48
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State three harmful effects of alcohol (ethanol) to human health.
Date posted: March 8, 2019. Answers (1)
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Name two dental diseases.
Date posted: March 8, 2019. Answers (1)
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State the role of the following hormones.
(i)Follicle stimulating hormone.
(ii)Progesterone.
Date posted: March 8, 2019. Answers (1)
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State the function of pleural fluid during breathing in humans.
Date posted: March 8, 2019. Answers (1)
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What is the role of fungi in an ecosystem?
Date posted: March 8, 2019. Answers (1)
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Date posted: March 8, 2019. Answers (1)
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Name the regions of the mammalian kidney.
Date posted: March 8, 2019. Answers (1)
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(i)Distinguish between passive and active immunity.
(ii)What is Acquired Immune Deficiency Syndrome (AIDS)?
Date posted: March 8, 2019. Answers (1)
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Give two reasons why water lily have stomata on the upper epidermis only.
Date posted: March 6, 2019. Answers (1)
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(ii)Explain why companion cells are located next to the sieve tubes.(Solved)
(a)(i)State the function of companion cells.
(ii)Explain why companion cells are located next to the sieve tubes.
Date posted: March 6, 2019. Answers (1)
- Define the following terms:
(a)Tissue.
(b)Organ system.(Solved)
Define the following terms:
(a)Tissue.
(b)Organ system.
Date posted: March 6, 2019. Answers (1)
- State the method of dispersal for each of the following fruits:
(i)Orange.
(ii)Sonchus.
(iii)Coconut.
(b)Name the agent of dispersal for the following fruits:
(i)Orange.
(ii)Coconut.
(c)Name a seed dispersed by:
(i)wind.
(ii)Censor mechanism.(Solved)
(a)State the method of dispersal for each of the following:
(i)Orange.
(ii)Sonchus.
(iii)Coconut.
(b)Name the agent of dispersal for each of the following fruits:
(i)Orange.
(ii)Coconut.
(c)Name a seed dispersed by:
(i)Wind.
(ii)Censor mechanism.
Date posted: March 2, 2019. Answers (1)
- An experiment was carried out as follows:
-2cm³of egg white suspension was placed in each test tubes labelled A,B,C and D.
-Three drops of hydrochloric acid(HCI)was added...(Solved)
An experiment was carried out as follows:
-2cm³of egg white suspension was placed in each of the test tubes labelled A,B,C and D.
-Three drops of hydrochloric acid (HCI) was added to each of test tubes labelled B,C and D.
-1cm³pepsin was added to each of test tubes labelled A, and C 1cm³ boiled pepsin to test tube labelled D.
All the test tubes were placed in a water bath at 35°C for 15 minutes.
(a)State the observations made in each of the test tubes labelled A,B,C and D.
(b)Account for the observations made in(a) above for test tubes labelled A,B,C and D.
(c)What was the role of HCI?
Date posted: March 2, 2019. Answers (1)
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What are the advantages of excreting uric acid other than ammonia in a kangaroo rat?
Date posted: March 2, 2019. Answers (1)
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Give two reasons why pressure of blood is greater in arteries than in veins of animals.
Date posted: March 2, 2019. Answers (1)
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State two artificial ways of breaking seed dormancy.
Date posted: March 2, 2019. Answers (1)
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Explain why several lateral buds sprout when the terminal bud in a young tree is cut off.
Date posted: March 2, 2019. Answers (1)
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Trace the path taken by oxygen to reach the muscle cells in an insect.
Date posted: March 2, 2019. Answers (1)
- State one function of each of the following organelles:
(i)Lysosomes.
(ii)Ribosome.(Solved)
State one function of each of the following organelles:
(i)Lysosomes.
(ii)Ribosome.
Date posted: March 2, 2019. Answers (1)
- (i)Name the causative agent of pulmonary tuberculosis.(ii)How is the disease prevented?(Solved)
(i)Name the causative agent of pulmonary tuberculosis.
(ii)How is the disease prevented?
Date posted: March 2, 2019. Answers (1)