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(a) Reducing sugar test;
(b) When the mixture of urine and Benedict solution is heated the color of the mixture turns from blue to green - to yellow – to orange/brown/red; indicating the presence of reducing sugar
sharon kalunda answered the question on September 13, 2019 at 10:42
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A goat weighing 20kg requires 216KJ while a mouse weighing 54gms requires 2830KJ per day. Explain.
Date posted: September 13, 2019. Answers (1)
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In a prolonged drought period, forage was scarce. It made animals reach out for higher forage and this way the giraffes got the stretched long necks.
(a) What is the term used for a characteristic such as the long necks outlined?
(b) What is the name given to the theory that describes the evolution of such structures like the long necks?
(c) State and explain the limitation of the theory you named in (b) above.
Date posted: September 13, 2019. Answers (1)
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The table below shows differences in air breathed in and out.
What is the reason for there differences.
Date posted: September 13, 2019. Answers (1)
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Which substance in the cigarettes smoke may cause lung cancer.
Date posted: September 13, 2019. Answers (1)
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Mr. Juma has sued Serenity Hospital on grounds that their child was wrongly identified such that they got the wrong one.The child is blood group O. Mr. Juma is blood group AB while Mrs. Juma is heterozygous blood group A.
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(b) Is Mr. Juma justified in his claims?
Date posted: September 13, 2019. Answers (1)
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The diagram below show single circulation of a fish.
(a) Write down the names of the parts labelled T,U and V.
(b) Explain the main disadvantage of this type of circulation.
(c) How is this type of circulation different from that found in man?
Date posted: September 13, 2019. Answers (1)
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The table below shows approximate numbers of organisms found in an ecosystem.
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Date posted: September 13, 2019. Answers (1)
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The photographs labelled K, L, M, N and P below are bones obtained from a mammal. For each of the bones K, L and M, two views are shown.
(a) Identify the bones and name the part of the mammalian body from which each was obtained. (5mks)
(b) Name the parts labelled 1, 2 and 4.
(c) Name the bones that form a joint with bone K at its anterior and posterior end
and in each case name the type of joint they form.
Anterior end.
(i) Bone(s)
(ii) Type of joint
Posterior end.
(i) Bone(s)
(ii) Type of joint
(d) State the function of the structure labelled 6 in bone P.
Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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Plasmodium
Bat
Yeast(Solved)
Write the kingdoms to which the following organisms belong.
Plasmodium
Bat
Yeast
Date posted: September 13, 2019. Answers (1)
- A student collected a plant with the following features:
-Vascular bundles in the stem were scattered with no cambium.
-Fibrous root system.
Name the sub-division and the class...(Solved)
A student collected a plant with the following features:
-Vascular bundles in the stem were scattered with no cambium.
-Fibrous root system.
Name the sub-division and the class to which the above plant belonged.
Sub-division
Class
Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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urea, uric acid and ammonia.(Solved)
Arrange the following nitrogenous waste products in order of decreasing toxicity:
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Date posted: September 13, 2019. Answers (1)
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Name two substances that are excreted through diffusion process in plants.
Date posted: September 13, 2019. Answers (1)
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Explain why the garden pea plant was preferred by Gregor Mendel in his crossing experiments.
Date posted: September 13, 2019. Answers (1)
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Potato cylinders were weighed and kept in distilled water overnight. They were then reweighed.
(a) Calculate the average mass of the potato cylinders at the end of the experiments.(Show your working).
(b) Explain why the mass of the cylinders had increased.
Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
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Date posted: September 13, 2019. Answers (1)
- Below is across section of a fruit.(Solved)
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(a) Name the type of placentation shown.
(b) Identify the parts labelled A.
Date posted: September 13, 2019. Answers (1)