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How are carnivores adapted to their type of nutrition? Give four ways.
Date posted:
December 6, 2017
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Define the term herbivores.
Give 4 ways in which the herbivores are adapted to their mode of nutrition
Date posted:
December 6, 2017
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Describe the emulsion test used in testing for lipids.
Date posted:
December 5, 2017
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In an experiment to test for non reducing sugars,dilute hydrochloric acid and sodium hydrogen carbonate solution were used. State the functions of the reagents.
Date posted:
December 5, 2017
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In an experiment,bean seeds were soaked and then placed in a vacuum flask coated with cotton wool. The thermometer was then inserted into the flask.
a)Explain the expected result
b)Account for the result in (a) above.
c) Explain how a control experiment can be set up
d)Why was vacuum flask used.
Date posted:
December 5, 2017
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Leopard and lion are from the same genus yet they cannot interbreed to produce viable offspring. Explain
Date posted:
December 5, 2017
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Name three factors affecting the rate of photosynthesis
Date posted:
December 5, 2017
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Describe adaptations of the leaf to its functions
Date posted:
December 5, 2017
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Describe starch-sugar inter-conversion theory of opening and closing of the stomata
Date posted:
December 4, 2017
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Define the term active transport and briefly explain three roles of active transport in animals.
Date posted:
December 4, 2017
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A red blood cell is placed in distilled water. Explain what happens to the red blood cell.
Date posted:
December 4, 2017
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Differentiate between haemolysis and crenation.
Date posted:
December 4, 2017
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Explain happens when you place a visking tubing half filled with sugar solution immersed in a beaker with distilled water.
Date posted:
December 4, 2017
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In the preparation of temporary slides, the following measures are taken into consideration state their importance:
(i) Using iodine
(ii) Adding a drop of water to the specimen.
(iii) Using a thin piece of the specimen
Date posted:
December 4, 2017
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Give the functions of the following parts of a microscope
(i) Revolving nose piece
(ii) Condenser
(iii) Eye piece
Date posted:
December 4, 2017
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Give two differences between common names and scientific names
Date posted:
December 4, 2017
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What are the differences between plants and animals?
Date posted:
December 3, 2017
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Give reasons why a motor vehicle is not a living thing
Date posted:
December 3, 2017
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Name and explain 5 branches of biology
Date posted:
December 3, 2017
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Explain how the ileum is adapted to absorption.
Date posted:
December 3, 2017
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What are the adaptations of xerophytes?
Date posted:
November 22, 2017
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The graph below shows daily variation of human body temperature over three days
(i)What is the maximum range of body temperature under normal conditions as shown in the graph?
(ii)At what time each day does body temperature drop to its lowest level?
(iii)Suggest a reason for the drop in temperature at the time referred to in (ii) above
(iv)Children typically have higher temperature than adults.Suggest a reason for this
(v)What is the advantage of the higher body temperature in children?
Date posted:
November 21, 2017
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Which waste product is almost absent in the renal vein but present in the renal artery?
Date posted:
November 20, 2017
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The diagram shows microscopic detail from a human lung
(i)Name the part labelled A,B and C
(ii)Give two features of the structures in the diagram that allow for efficient gas exchange
(iii)Which gas,dissolved in the blood,can trigger deeper or faster breathinggf
Date posted:
November 20, 2017
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The diagram below shows the internal structure of a leaf
(i)Name the one tissue type that is found at both W and X
(b)The cell at W contains many organelles that carry out photosynthesis.
Suggest why the cells at W contain more of these organelles than the cells at cells at X
(c)In layer X,gases can diffuse throughout the leaf.Name one such gas
(d)State one function of the opening at Z
Date posted:
November 20, 2017
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The diagram below shows a section through human skin
(i)Name the parts labelled A,B and C
(ii)The skin is one of the excretory organs in humans
name one substance excreted by the skin
(iii)List two other functions of the skin
Date posted:
November 20, 2017
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Amoeba is a tiny ,one-celled organism.This diagram below shows the structure of a fresh water Amoeba as seen through a light microscope
(a)Name parts labelled A,C and D on the diagram
(b)state:-One function of part A
-One function of part C
Date posted:
November 20, 2017
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State the theories explaining the origin of HIV/AIDS
Date posted:
November 18, 2017
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Give two reasons why lipids are not suitable respiratory substrates
Date posted:
November 17, 2017
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A strip of a herbaceous Tradescantia was cut longitudinally as shown below and placed in solution X.After one hour,the strips appeared as shown below.
(a)What was the nature of solution X?
(b)What physiological process was being investigated?
(b)Account for the results at the end of experiment after one hour
Date posted:
November 16, 2017