Increase in temperature increases rate of enzymatic reactions upto optimum temperature beyond which further increase in temperature lowers rate of reaction because enzymes are denatured.Decrease in temperature lower the rate of enzymatic reactions. Temperatures below 10°C inactivate enzymes leading to low rate of enzymatic reactions
ambrose92 answered the question on November 17, 2017 at 10:24
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Give two reasons why lipids are not suitable respiratory substrates
Date posted: November 17, 2017. Answers (1)
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Name the respiratory surface in the following organisms:
a)Locust
b)Amoeba
c)Tilapia
d)Human beings
Date posted: November 17, 2017. Answers (1)
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The organism below is found in kingdom fungi
(a)Using structures X and Y only,why does the organism not qualify as a plant
(b)What division does the moss and liverwort belong to in kingdom plantae?
Date posted: November 16, 2017. Answers (1)
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the pelvic girdle of a mammal is shown below.Study it and answer the questions that follow.
(a)(i)Name part labeled Y.
(ii)State three functions of part Y named in (a)(i)above.
Date posted: November 16, 2017. Answers (1)
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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. Answers (1)
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The diagram below illustrates gaseous exchange in animals
(i)Why was air passed through potassium hydroxide in flask K?
(ii)Explain the observation made in flask N
(iii)Why is there no oxygen gas in the air exiting in flask N?
Date posted: November 16, 2017. Answers (1)
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What type of fruit is represented by Diagram T?
(a)Give a reason
(b)Name the agent of dispersal
Date posted: November 16, 2017. Answers (1)
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The figure represents part of the cycling of nitrogen within the ecosystem
(a)(i)State the process P
(ii)Name the organism that carries out process P
(iii)Name of the organisms which carry out process R and S
(b)Outline how protein in animals is converted to Ammonium ions in the soil indicated by T on the figure
Date posted: November 16, 2017. Answers (1)
- The diagram below shows how gaseous exchange occurs across the gill in fish(Solved)
The diagram below shows how gaseous exchange occurs across the gill in fish
(i)What is the term used to describe this type of flow displayed above?
(ii)What is the advantage of this flow system
(iii)Name an organ in human beings that displays this flow system
Date posted: November 16, 2017. Answers (1)
- Study the diagram K below and answer the questions (Solved)
Study the diagram K below and answer the questions
Name the division to which K belongs
Division……………………………………………………..
Reasons …………………………………………………………..
Sub-division………………………………………………………
Reason………………………………………………………………
Class……………………………………………………………………
Date posted: November 16, 2017. Answers (1)
- Use the diagrams below to answer the questions that follows(Solved)
Use the diagrams below to answer the questions that follows
(i)Identify the type of cell division
(ii)With a reason , name the stage of cell division represented in each case.
Date posted: November 16, 2017. Answers (1)
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State two adaptations of the nephron of a desert animal.
Date posted: November 16, 2017. Answers (1)
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State two ways in which plants get rid of their nitrogenous wastes.
Date posted: November 16, 2017. Answers (1)
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State the role of saprophytes in an ecosystem
Date posted: November 16, 2017. Answers (1)
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When are the following hormones secreted:
a) Insulin
b) Antidiuretic hormone.
Date posted: November 16, 2017. Answers (1)
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Explain why amoeba does not require transport system.
Date posted: November 16, 2017. Answers (1)
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It is necessary for large animals to have elaborate transport system. Explain
Date posted: November 16, 2017. Answers (1)
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State one way in which food moves in the phloem naturally.
Date posted: November 16, 2017. Answers (1)
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Explain why cell walls of root hairs are thin.
Date posted: November 16, 2017. Answers (1)
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Explain how stigma in wind pollinated flower is adapted to its function
Date posted: November 16, 2017. Answers (1)