-Brewing of alcohol
-Biogas production
-Sewage treatment
-Baking of bread.
-Compost manure formation
- Commercial production of citric acid
johnmulu answered the question on May 4, 2017 at 12:39
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The diagram below shows an experimental set-up to investigate a certain physiological process in plants .
(Solved)
The diagram below shows an experimental set-up to investigate a certain physiological process in plants .
(a) State the aim of the experiment
(b) Account for the expected colour change in tube F.
Date posted:
May 4, 2017
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Answers (1)
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State two reasons why accumulation of lactic acids leads to an increase in heartbeat.
(Solved)
State two reasons why accumulation of lactic acids leads to an increase in heartbeat.
Date posted:
May 4, 2017
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Answers (1)
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Name the three end products of anaerobic respiration in plants.
(Solved)
Name the three end products of anaerobic respiration in plants.
Date posted:
May 4, 2017
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Answers (1)
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The diagram below represents a set-up that students used in an investigation.
(Solved)
The diagram below represents a set-up that students used in an investigation.
(a) Name the physiological process that was being investigated.
(b) State the role of potassium hydroxide in flask K.
Date posted:
May 4, 2017
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Answers (1)
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In an experiment, disinfected soaked bean seeds were put in a vacuum flask which was then fitted with a thermometer as shown in the diagram below.
(Solved)
In an experiment, disinfected soaked bean seeds were put in a vacuum flask which was then fitted with a thermometer as shown in the diagram below.
The temperature reading were taken every morning for three consecutive days
(a) Which process was being investigated?
(b) Why were the seeds disinfected?
(c) Why was a vacuum flask used in the set-up?
(d) How would a control for this experiment be set?
Date posted:
May 4, 2017
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Answers (1)
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State two ways in which anaerobic respiration is applied in industries
(Solved)
State two ways in which anaerobic respiration is applied in industries
Date posted:
May 4, 2017
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Answers (1)
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How are the mitochondria adapted their functions?
(Solved)
How are the mitochondria adapted their functions?
Date posted:
May 4, 2017
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Answers (1)
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Explain how anaerobic respiration is applied in sewage treatment
(Solved)
Explain how anaerobic respiration is applied in sewage treatment
Date posted:
May 4, 2017
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Answers (1)
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Explain what happens when there is oxygen debt in human muscles
(Solved)
Explain what happens when there is oxygen debt in human muscles
Date posted:
May 4, 2017
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Answers (1)
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Give three factors that determine the amount of energy a human being require in a day
(Solved)
Give three factors that determine the amount of energy a human being require in a day
Date posted:
May 4, 2017
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Answers (1)
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(a) Name the products of anaerobic respiration in
(i) Plants(ii) Animals
(b) What is oxygen debt?
(Solved)
(a) Name the products of anaerobic respiration in
(i) Plants(ii) Animals
(b) What is oxygen debt?
Date posted:
May 4, 2017
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Answers (1)
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(a) A dog weighing 15.2 kg requires 216kj while a mouse weighing 50g requires 2736kj per day. Explain.
(b) What is the end-product of respiration in animals when there is insufficient oxygen supply?
(Solved)
(a) A dog weighing 15.2 kg requires 216kj while a mouse weighing 50g requires 2736kj per day. Explain.
(b) What is the end-product of respiration in animals when there is insufficient oxygen supply?
Date posted:
May 4, 2017
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Answers (1)
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Name the substance which accumulates in muscles when respiration occurs with insufficient oxygen.
(Solved)
Name the substance which accumulates in muscles when respiration occurs with insufficient oxygen.
Date posted:
May 4, 2017
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Answers (1)
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Other than carbon dioxide, name other products of anaerobic respiration
(Solved)
Other than carbon dioxide, name other products of anaerobic respiration
Date posted:
May 4, 2017
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Answers (1)
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Give two reasons why accumulation of lactic acid during vigorous exercise leads to an increase in heartbeat.
(Solved)
Give two reasons why accumulation of lactic acid during vigorous exercise leads to an increase in heartbeat.
Date posted:
May 4, 2017
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Answers (1)
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What are the three end products of anaerobic respiration in plants.
(Solved)
What are the three end products of anaerobic respiration in plants.
Date posted:
May 4, 2017
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Answers (1)
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The diagram below shows a set - up that was used to demonstrate fermentation
(Solved)
The diagram below shows a set - up that was used to demonstrate fermentation
Glucose solution was boiled and added on top it. The glucose solution was then allowed to cool before yeast suspension was added.
(a) Why was the glucose solution boiled before adding the yeast Suspension?
(b) What was the importance of cooling the glucose solution before adding the yeast suspension?
(c) What was the use of oil in the experiment?
(d) What observation would be made in test tube B at the end of the experiment?
(e) Suggest a control for this experiment.
Date posted:
May 4, 2017
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Answers (1)
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The diagram below represents some gaseous exchange structures in humans.
(Solved)
The diagram below represents some gaseous exchange structures in humans.
(a) Name the structure labeled K, L and M.
(b) Name the process by which inhaled air moves from the structure labeled L into blood capillaries
(c) Give the scientific name of the organism that causes tuberculosis in humans
Date posted:
May 4, 2017
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Answers (1)
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(a) Name two structures for gaseous exchange in aquatic plants
(b) What is the effect of contraction of the diaphragm muscles during breathing in mammals?
(Solved)
(a) Name two structures for gaseous exchange in aquatic plants
(b) What is the effect of contraction of the diaphragm muscles during breathing in mammals?
Date posted:
May 4, 2017
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Answers (1)
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The diagram below illustrates a blood capillary surrounding a structure for gaseous exchange in human beings
(Solved)
The diagram below illustrates a blood capillary surrounding a structure for gaseous exchange in human beings
(a) Name the gases exchange structure.
(b) Identify the gases labelled Y and Z.
(c) How does cigarette smoking lead to lung cancer
Date posted:
May 4, 2017
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Answers (1)