a) Ball and socket
b) Fixed joint
sharon kalunda answered the question on May 27, 2019 at 05:50
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b) What is the advantage of...(Solved)
The diagram below show a respiratory structure of a bony fish
a) Name the parts labeled A, B and C
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Date posted: May 27, 2019. Answers (1)
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After 10 minutes the students carried out iodine test inside...(Solved)
A group of students set up an experiment to demonstrate a certain process as shown below.
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b) account for the results expected in the experiment above.
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be represented by XH
i) What is the genotype...(Solved)
Haemophilia is a genetic condition transmitted through a recessive gene linked to X chromosome. The normal gene may
be represented by XH
i) What is the genotype of the haemophilic female?.
ii) A woman who is a carrier for the haemophilia gene marries a normal man. Work out the phenotypic ratio for their
offspring.
iii) Haemophilia is more common in males than in females. Explain this phenomenon.
Date posted: May 27, 2019. Answers (1)
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a) Name the process that occurs in
L
P
b) (i) state the structural difference between K...(Solved)
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b) Name the process that occurs in
L
P
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Date posted: May 27, 2019. Answers (1)
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Date posted: May 24, 2019. Answers (1)
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a) What eye defect was he suffering...(Solved)
A boy could clearly read a book placed 10cm away but could not identify his friend 10 metres away
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The number and distribution of stomata of three different leaves are shown in the table below
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B
Date posted: May 24, 2019. Answers (1)
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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.
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Date posted: May 24, 2019. Answers (1)
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Name the instrument and state its functions
Name
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Name the instrument and state its functions
Name
Function
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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)