O-LevelBiologyCoordination & Response5090/22 · Oct/Nov 2018 · Q210 Marks
The diagram shows the human male reproductive organs and associated structures. fluid from organ G organ F -tube H tube E [Diagram showing human male reproductive organs labeled E, F, G, H]
- (a)(i)Identify each of the following: tube E organ F organ G tube H[4]
- (a)(ii)State one difference between the fluids carried by tube E and tube H.[1]
- (b)(i)State one way in which the fluid from organ G may be different in a person with diabetes compared to a person without diabetes.[1]
- (b)(ii)A person with diabetes may be treated with insulin produced by genetically modified bacteria. Outline how such genetically modified bacteria may be produced and used to manufacture human insulin on a commercial scale.[4]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2018). The mark or mark type is shown in brackets.
- [4] (E) urethra ; (F) bladder ; (G) kidney ; (H) ureter ; R gall (bladder)
- [1] semen / seminal fluid / sperm / gametes + carried by E / not carried by H ;
- [1] (contains) glucose ;
- [4] insulin gene ; from + human + DNA / chromosome / genome ; to + bacterial + DNA / chromosome / genome / plasmid ; fermenter ; reproduce / multiply / divide / mitosis / binary fission ; Ig fermentation
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