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Name the hormone that causes leaf, flowers and fruit abscission
Date posted:
June 18, 2019
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Name three main methods through which HIV/AIDS is transmitted
Date posted:
June 18, 2019
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Name the part of an ovule that develops into each of the following parts of a seed after
fertilization
i) Testa
ii) Endosperm
Date posted:
June 18, 2019
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Explain how blood clot is formed once a blood vessel is injured
Date posted:
June 17, 2019
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Name the components of blood that do not enter the renal tubule in mammals
Date posted:
June 17, 2019
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Give a reason why the left ventricle muscles are thicker than the right ventricles muscles
Date posted:
June 17, 2019
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Identify the part of the heart that initiates the heart beat
Date posted:
June 17, 2019
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A transfusion of RH+ blood was given to a patient with Rh- blood. After one
week a similar transfusion was given to the same patient. What was likely to be the effect of
the second transfusion?
Date posted:
June 17, 2019
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A woman gave birth to a child of blood group B+ (B positive). Name the two antigens that determined her child’s blood group.
Date posted:
June 17, 2019
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Uptake of water by plants is not affected by metabolic poisons. Explain.
Date posted:
June 17, 2019
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Name a disease of the blood characterized by excessive production of white blood cells
Date posted:
June 17, 2019
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Why do plants not take in oxygen during the day although they need it for respiration?
Date posted:
June 17, 2019
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Name the blood vessel that nourishes the heart
Date posted:
June 17, 2019
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Explain why deficiency of vitamin K leads to excessive bleeding even from small cuts
Date posted:
June 17, 2019
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Distinguish between tissue fluid and lymph
Date posted:
June 17, 2019
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State the factor that maintain transpiration stream
Date posted:
June 17, 2019
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How are sieve tube elements adapted to their function
Date posted:
June 17, 2019
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Explain why a fresh wound on the skin bleeds more on a hot sunny day than on a cold chilly day.
Date posted:
June 17, 2019
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Why is an effective respiratory system often associated with a circulatory system.
Date posted:
June 17, 2019
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Differentiate between respiration and respiratory surface.
Date posted:
June 17, 2019
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The equation below summarizes a metabolic process in plants.
Glucose----> Ethanol + carbon (IV) oxide+ Energy
State two industrial applications of the above equation.
Date posted:
June 17, 2019
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Give two reasons why fats are not the main respiratory substrates in the
body of a mammal and yet they give a lot of energy when oxidized.
Date posted:
June 17, 2019
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Explain why a rat, though small eats more frequently than an elephant
Date posted:
June 17, 2019
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Whooping cough is a disease of the respiratory system. Name the causative agents and give two symptoms
Date posted:
June 17, 2019
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Briefly explain Krebs cycle in a plant cell during anaerobic respiration.
Date posted:
June 17, 2019
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One molecule of lipid gives more energy than one molecule of glucose when
respired aerobically
but it is NOT always used as a respiratory substrate
a) Give two reasons for this
b) Name two disaccharides which are reducing sugar
Date posted:
June 17, 2019
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State two phases of aerobic respiration.
Date posted:
June 17, 2019
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Removal of the apical bud from a shrub is a practice that results in the
development of many
lateral buds which later form branches
(a) Give reasons for the development of lateral branches after the removal of
the apical bud
(b) Suggest one application of this practice?
Date posted:
June 17, 2019
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State how the nerve cell structure is suited to its function of impulse transmission
Date posted:
June 17, 2019
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Briefly explain the role of the following part of skin
a) Cornified layer
b) Malpighian layer
Date posted:
June 17, 2019