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Plant cells do not burst when immersed in distilled water. Explain
Date posted:
April 27, 2017
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a) What is the formula for calculating linear magnification of a specimen when using a hand lens
b) Give a reason why staining is necessary when preparing specimens for observation under the microscope.
Date posted:
April 27, 2017
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Which organelle would be abundant in:
Skeletal muscle cell
Palisade cell
Date posted:
April 27, 2017
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How does nutrition as a characteristic of living organisms differ in plants and animals?
Date posted:
April 27, 2017
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Motor vehicles move, use energy and produce carbon dioxide and water. Similar characteristics occurs in living organisms yet motor vehicles are not classified as living Explain.
Date posted:
April 27, 2017
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Explain why Lamarck's theory of evolution is not accepted by Biologists today.
Date posted:
January 21, 2017
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Name the causative organism of the following diseases
i) Malaria
ii) Bilharzia
Date posted:
January 21, 2017
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A small boy remarked that his dog looks larger on cold days than on hot days. Give biological explanation for this.
Date posted:
January 21, 2017
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Insects’ blood is said to lack a respiratory pigment. Explain
Date posted:
January 21, 2017
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Give two roles of active transport in human beings.
Date posted:
January 21, 2017
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A rhinoceros in a national park was found to be infected with ticks. Name the trophic level occupied by the
a) rhinoceros
b) ticks
Date posted:
January 18, 2017
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A constant supply of oxygen is necessary for plants to efficiently absorb dissplved mineral salts from soil. Explain
Date posted:
January 17, 2017
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Name one factor that is maintained at a relatively constant level in the body by the following organs
i) Liver
ii) Skin
iii) Kidneys
Date posted:
January 17, 2017
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Other than xylem tissue, name two strengthening tissues in plants.
Date posted:
January 17, 2017
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Name the main mineral elements obtained from insects by insectivoros plants
Date posted:
January 16, 2017
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Give two advantages of metamorphosis to the life of insects.
Date posted:
January 16, 2017
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State one advantage of heterodonts over homodonts.
Date posted:
January 14, 2017
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State the; a) Material that strengthens the xylem tissue.
b) Tissue that is removed when the bark of a dicotyledonous plant is ringed.
Date posted:
January 14, 2017
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What is the difference between respiratory quotient and oxygen debt?
Date posted:
January 14, 2017