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Name the hormone that stimulate the maturation of the graafian follicles to release a mature ovum in female reproductive cycle.
Date posted:
January 21, 2017
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State two distinguishing characteristics of the kingdom protoctista.
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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Give two structural differences between skeletal and smooth muscles.
Date posted:
January 21, 2017
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Give an example of the sex linked trait in humans on
i) Y – Chromosomes
ii) X - Chromosomes
Date posted:
January 21, 2017
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Give the function of the following structures in the human ear
(a) Semi-7 circular canals.
(b) Eustachian tube.
Date posted:
January 21, 2017
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Explain why unicellular organisms such as paramecium lack complex organs for gaseous exchange.
Date posted:
January 21, 2017
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Where are lysosomes synthesized?
Date posted:
January 21, 2017
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Name the organelle where Kreb’s/Citric cycle take place in a cell.
Date posted:
January 21, 2017
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What are fossils?
Date posted:
January 18, 2017
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A woman has a rare abnormality of the eyelids, called ptosis, which makes it impossible for her to open her eyes completely. The conditions has been found to be due to a single dominant gene (T). The woman's father had ptosis, but her mother had normal eyelids. Her father's mother had normal eyelids
a) What are the probable genotypes of
i) The woman
ii) Her father
iii) Her mother
Date posted:
January 18, 2017
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A person of blood group O requires blood transfusion. Name the blood group(s) that would - be donor(s)
Date posted:
January 18, 2017
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Name the process, in nature, which
a) Removes carbon (IV) oxide from the atmosphere
b) Releases carbon (IV) oxide into the atmosphere
Date posted:
January 18, 2017
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What is meant by sex-linked genes?
Date posted:
January 18, 2017
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State two important functions of the spinal cord.
Date posted:
January 18, 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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What name is given to the position an organism occupies and the role it plays in an ecosystem?
Date posted:
January 18, 2017
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What protects the following parts of maize seedling during germination
a) Embryonic shoot
b) Embryonic root
Date posted:
January 18, 2017
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State two features of the placenta which speeds up the exchange of materials between the mother and foetus.
Date posted:
January 18, 2017
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Where in human body are relay neurons found?
Date posted:
January 18, 2017
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Name the source of progesterone
a) Before the fourth month of pregnancy
b) After the fourth month of pregnancy
Date posted:
January 18, 2017
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Distinguish between deoxyribonucleic acid and ribonucleic acid in man in these aspects
a) Chemical composition
b) Function
c) Location in the cell
Date posted:
January 18, 2017
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Give the difference between population and a community.
Date posted:
January 18, 2017
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Explain why a maize plant does not undergo secondary growth.
Date posted:
January 18, 2017
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Name the compound that stores the energy that is released during the oxidation of glucose.
Date posted:
January 18, 2017
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In man, the male is referred to as the heterogametic sex. Explain
Date posted:
January 18, 2017
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What is the difference between transpiration and guttation?
Date posted:
January 18, 2017
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State two structural features that increase the rate of impulse transmission through a neurone.
Date posted:
January 17, 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 the structure which prevents oxygenated and deoxygenated blood from mixing inside the mammalian heart.
Date posted:
January 17, 2017