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a) Specific locality with a particular set of conditions where an organism lives
b) Total dry weight of living organisms at a particular trophic level
sharon kalunda answered the question on May 24, 2019 at 13:54
- The number and distribution of stomata of three different leaves are shown in the table below
Suggest the possible habitat of the plant from which the...(Solved)
The number and distribution of stomata of three different leaves are shown in the table below
Suggest the possible habitat of the plant from which the leaves were obtained
A
B
Date posted: May 24, 2019. Answers (1)
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Name the blood vessel that connects arteries to veins
Date posted: May 24, 2019. Answers (1)
- Name the organelles that would be most likely found in large numbers in cells that perform the functions below.
a) A cell in the ileum that...(Solved)
Name the organelles that would be most likely found in large numbers in cells that perform the functions below.
a) A cell in the ileum that actively takes in glucose
b) A cell in the liver that breaks down foreign bodies
Date posted: May 24, 2019. Answers (1)
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State the function of the Node of ranvier structures in neurone.
Date posted: May 24, 2019. Answers (1)
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High temperature stops enzyme action.Explain.
Date posted: May 24, 2019. Answers (1)
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Lack of magnesium leads to yellowing of leaves in plants.Explain.
Date posted: May 24, 2019. Answers (1)
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The thyroid glands swell in some individuals.Explain.
Date posted: May 24, 2019. Answers (1)
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What is the biological importance of denitrification
Date posted: May 24, 2019. Answers (1)
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A couple gave birth to children with all types of blood groups. Suggest the possible genotypes of the parents
Date posted: May 24, 2019. Answers (1)
- The diagram below show an instrument used in the Biology laboratory
Name the instrument and state its functions
Name
Function(Solved)
The diagram below show an instrument used in the Biology laboratory
Name the instrument and state its functions
Name
Function
Date posted: May 24, 2019. Answers (1)
- An experiment was carried out to investigate haemolysis of human red blood cells. The red blood cells were placed in different concentration of sodium chloride...(Solved)
An experiment was carried out to investigate haemolysis of human red blood cells. The red blood cells were placed in different concentration of sodium chloride solution. The percentage of haemolysed cells was determined. The results were as shown in the table below.
a) i) On the grid provided, plot a graph of haemolysed red blood cells against salt concentration.
ii)At what concentration of salt solution was the proportion of haemolysed cell equal to non-haemolysed cells?
iii) State the percentage of cells haemolysed at salt concentration of 0.45%.
b) Account for the results obtained at:
i) 0.33 percent salt concentration.
ii) 0.48 per cent salt concentration.
c) What would happen to the red blood cells if they were placed in 0.50 percent salt solution?
d) Explain what would happen to onion epidermal cells if they were placed in distilled water.
Date posted: May 24, 2019. Answers (1)
- The diagram below represents a food web in a certain ecosystem.
a) Name the trophic level occupied by each of the following:
i) Caterpillar .
ii) Small...(Solved)
The diagram below represents a food web in a certain ecosystem.
a) Name the trophic level occupied by each of the following:
i) Caterpillar .
ii) Small insects .
b) From the food web, construct two food chains which end with lizards as tertiary consumer.
c) i) Which organisms have the least biomass in this ecosystem?
ii) Explain the answer in c(i) above.
Date posted: May 24, 2019. Answers (1)
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State two consequences of gene mutations.
Date posted: May 24, 2019. Answers (1)
- Mwalimu Andrew of Mwisho wa Lami High school quarrels with his wife Fiolina over the identity of their child. Andrew
is heterozygous blood group A and...(Solved)
Mwalimu Andrew of Mwisho wa Lami High school quarrels with his wife Fiolina over the identity of their child. Andrew
is heterozygous blood group A and Fiolina is homozygous blood group B. The child born is of blood group O. Andrew has
sued Fiolina for divorce over infidelity. Does Andrew have a chance of winning the case? Show your working.
Date posted: May 24, 2019. Answers (1)
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State the structural modification of nephron in the desert mammals.
Date posted: May 24, 2019. Answers (1)
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Write the dental formula of an adult human
Date posted: May 24, 2019. Answers (1)
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Name two functional parts of the mammalian circulatory system.
Date posted: May 24, 2019. Answers (1)
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Explain how the girdles are adapted to their functions.
Date posted: May 24, 2019. Answers (1)
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State three functions of the endoskeleton.
Date posted: May 24, 2019. Answers (1)
- An experiment was carried out to find out the concentrations of ions in the cell sap of an aquatic plant and that of the water...(Solved)
An experiment was carried out to find out the concentrations of ions in the cell sap of an aquatic plant and that of the water in the pond in which they grew.
a) i) Name the process by which the aquatic plant absorbs ions from the pond water.
ii) Outline four roles of the process you have named in (a) (i) above in a mammalian body.
b) How can the rate of uptake of ions by aquatic plants be increased.
c) Name the part of the cell that allows passage of ions in and out of the cell.
Date posted: May 24, 2019. Answers (1)