The function of red blood cells is to transport oxygen around the body in the blood.
Explain how the shape of a red blood cell is related to its function.
As well as its shape, the red blood cell also has internal adaptations to allow it to carry out its function.
One of these is that it doesn't have a nucleus.
Explain why this is beneficial for the functioning of the cell.
Table 1 shows the number of blood cells per dm3 of blood of two people.
Table 1
Type of blood cell | Number of cells per dm3 of blood | |
Person A | Person B | |
Red blood cell | 5 x 1012 | 6 x 1012 |
White blood cell | 9 x 109 | 7 x 1010 |
Give the number of white blood cells per dm3 of blood for person A and person B as a normal number.
Of the two people in Table 1, one of them is infected with a pathogen.
Identify the infected person and give a reason for your answer.
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