a) As the temperature increases, the rate of the reaction also increases; this happens because an increase in temperature increases molecular movement, thus increasing the chances of collision between the enzyme and substrate molecules;
b) X – is the optimum temperature/ It is the temperature at which the reaction proceeds
marto answered the question on October 4, 2019 at 08:00
- The diagram below shows a leaf of a growing plant partly covered with aluminium foil.
The plant was placed in the sun from morning to midday...(Solved)
The diagram below shows a leaf of a growing plant partly covered with aluminium foil.
The plant was placed in the sun from morning to midday and then tested for starch.
(a) What was the aim of the experiment?
(b) State the observation made when the leaf was tested for starch.
Date posted: October 4, 2019. Answers (1)
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Name two products of light reaction used in the dark reaction.
Date posted: October 4, 2019. Answers (1)
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(b) Name the bond found in proteins(Solved)
(a) State two difference between monosaccharide and polysaccharides.
(b) Name the bond found in proteins
Date posted: October 4, 2019. Answers (1)
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What is glycolysis?
Date posted: October 4, 2019. Answers (1)
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Study the diagram below and answer the questions that follow.
(a) Label the parts A and B
(b) State one observable difference between the structure above and the liverwort
Date posted: October 4, 2019. Answers (1)
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Explain why small mammals such as moles feed more frequently than larger ones such as elephants.
Date posted: October 4, 2019. Answers (1)
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Study the dental formula given below.
(a) Identify with reasons the mode of feeding of the animals whose dental formula is given above
(b) Calculate the total number of teeth in the mouth of the above animal
Date posted: October 4, 2019. Answers (1)
- State three ways by which the rate of enzyme controlled reactions can be increased.(Solved)
State three ways by which the rate of enzyme controlled reactions can be increased.
Date posted: October 4, 2019. Answers (1)
- The concentration of carbon IV oxide in a tropical forest was measured during the course of 24 hour period from mid-night. The graph below shows...(Solved)
The concentration of carbon IV oxide in a tropical forest was measured during the course of 24 hour period from mid-night. The graph below shows the results obtained.
Account for the results obtained at:
(i) Midnight.
(ii) At 12.00 noon
Date posted: October 4, 2019. Answers (1)
- a)Name the specific part of the chloroplast where the following processes occur.(Solved)
a)Name the specific part of the chloroplast where the following processes occur.
(i) Carbon IV oxide fixation
(ii) Photolysis
(b) State one way in which the dark reactions of photosynthesis depends on light reaction.
Date posted: October 4, 2019. Answers (1)
- The table below shows three enzymes A, B and C and their respective optimum pH.(Solved)
The table below shows three enzymes A, B and C and their respective optimum pH.
(i) Name the most likely region of the alimentary canal of a mammal where enzyme B would be found.
(ii) Give a reason for your answer in (a) (i) above
Date posted: October 4, 2019. Answers (1)
- (a) Name the disease caused by schistosoma parasites in man.
(b) How is schistosome adapted to its parasitic mode of life?(Solved)
(a) Name the disease caused by schistosoma parasites in man.
(b) How is schistosome adapted to its parasitic mode of life?
Date posted: October 4, 2019. Answers (1)
- The diagram below represents a cell organelle(Solved)
The diagram below represents a cell organelle.
(i) Name the part labeled y
(ii) State the function of the part labeled X
State the function of the vitamin named in (i) above
Date posted: October 4, 2019. Answers (1)
- Below is a process that takes place along the mammalian digestive system.(Solved)
Below is a process that takes place along the mammalian digestive system.
(a) Name the processes represented by A and B
(b) Name part of the alimentary canal where the process B takes place
Date posted: October 4, 2019. Answers (1)
- Briefly explain the fate of the following products from the light stage of the process of
Photosynthesis:
(a) Oxygen
(b) Hydrogen
(c) ATP(Solved)
Briefly explain the fate of the following products from the light stage of the process of
Photosynthesis:
(a) Oxygen
(b) Hydrogen
(c) ATP
Date posted: October 3, 2019. Answers (1)
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State two ways in which guard cells differ from other epidermal cells.
Date posted: October 3, 2019. Answers (1)
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Briefly explain the symbiotic relationship in the root nodule of a leguminous plant.
Date posted: October 3, 2019. Answers (1)
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Briefly explain the effect of poisoning the roots hair on the uptake of nitrate by plants.
Date posted: October 3, 2019. Answers (1)
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b) What is the function of hydrochloric acid in the alimentary canal.(Solved)
b)State the role of emulsification in the digestion of fats in the alimentary canal.
b) What is the function of hydrochloric acid in the alimentary canal.
Date posted: October 3, 2019. Answers (1)
- The diagram below represents a cell organelle.(Solved)
The diagram below represents a cell organelle.
i) Name the part labeled Y
ii) State the function of the part labeled X
Date posted: October 3, 2019. Answers (1)