13. Excretion
A section of Biology, 5090
Listing 10 of 96 questions
The diagram shows the total volume of water entering and leaving organs of the human alimentary canal during one day. A B X cm3 absorbed from the ileum 1250 cm3 absorbed from the large intestine 3500 cm3 added to the mouth by food, drink and saliva 1500 cm3 added by the stomach 200 cm3 added by the large intestine 4000 cm3 added by the liver, pancreas and duodenum 150 cm3 lost during egestion Name the organs labelled A and B. A B Calculate the volume of water, X, absorbed from the ileum. cm3 Describe the absorption of water from the ileum. State how a named organ causes some of the water absorbed from the ileum to later become water in the urine.
5090_w20_qp_22
THEORY
2020
Paper 2, Variant 2
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The kidneys are organs of excretion. Define the term excretion. A person with kidney damage requires the process of dialysis to take place several times each week. Dialysis is carried out using a kidney machine connected to the blood supply of the person. The diagram shows a section through the internal structure of a kidney machine. blood from person blood to person dialysis membrane dialysis fluid out dialysis fluid in Describe the structure of the dialysis membrane and explain how it functions. Explain why the dialysis fluid in the kidney machine must be continuously replaced.
5090_w20_qp_22
THEORY
2020
Paper 2, Variant 2
View
Questions Discovered
96