Pages in this set

Page 1

Preview of page 1
Homeostasis
5 The hormone insulin is a protein. Insulin is produced in the pancreas and controls blood glucose
concentration.
5 (a) Which organ in the body monitors blood glucose concentration?
............................................................................................................................................
(1 mark)
5 (b) We now know that a lack of the hormone insulin causes diabetes. In the early…

Page 2

Preview of page 2
5 (d) Evaluate the use of dogs in experiments of this type.
Remember to include a conclusion to your evaluation.
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
(3 marks)

____
7

4 The pancreas is involved in digestion and controlling the internal conditions of the body.
(a) Name two digestive…

Page 3

Preview of page 3
5 Bile is produced in the liver, stored in the gall bladder, and then released into the small intestine.
(a) Explain how bile affects the digestion of food in the small intestine.
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
............................................................................................................................................
(2 marks)
(b) Bile contains bile pigments and cholesterol.

If the diet contains too…

Page 4

Preview of page 4
(b) The diagram shows a section through part of the skin.
The muscle labelled X controls the flow of blood into the skin capillary. When muscle X contracts, the
flow of blood into the skin capillary is reduced.




Explain the role of muscle X in the control of body temperature.…

Page 5

Preview of page 5
5 Insulin controls blood glucose concentration.

5 (a) The rate at which blood glucose concentration changes is affected by the food eaten.
In an experiment a person who does not have diabetes ate two slices of white bread.
The change in her blood glucose concentration was recorded over the next…

Page 6

Preview of page 6
5 (b) Pancreatic-cell transplantation is a new treatment for diabetes. Insulin-making cells are taken
from up to three dead donors. The cells are kept alive before being injected into the diabetic in a
small operation. The cells soon begin to make insulin.
In one recent study 58 % of recipients…

Page 7

Preview of page 7
2 Diabetes is a disease in which a person's blood glucose concentration rises to higher levels than
normal.
Diabetes is caused by insufficient insulin being produced.
2 (a) (i) Which organ monitors blood glucose concentration?
..................................................................................................................................
(1 mark)
2 (a) (ii) Insulin reduces the concentration of glucose in the blood.…

Page 8

Preview of page 8
(2 marks)
2 (b) (iv) The study of diabetic patients was carried out by an independent company.
Why is it important that the study should be independent?
..................................................................................................................................
..................................................................................................................................
..................................................................................................................................
(1 mark)

____
7

5 During exercise an athlete's core body temperature may rise.
5 (a) What causes this rise…

Page 9

Preview of page 9
Suggest an explanation for the differences in core body temperature:
5 (c) (i) between 0 and 2 minutes
..................................................................................................................................
..................................................................................................................................
..................................................................................................................................
(1 mark)
5 (c) (ii) between 4 and 10 minutes.
..................................................................................................................................
..................................................................................................................................
..................................................................................................................................
..................................................................................................................................
..................................................................................................................................
(2 marks)

____
8

3 (a) (i) Which organ in the body monitors the…

Page 10

Preview of page 10
3 (c) To make insulin, cells in the pancreas need amino acids.
A small section of DNA in the pancreas cells is involved in making insulin from the amino acids.
3 (c) (i) Insulin is a hormone.
What type of substance is insulin?
Draw a ring around one answer.
Carbohydrate…

Comments

Swallowtail

Looking at sample examination questions is always a useful exercise to see what can be asked.These have a sample mark scheme for students to look at when they have tackled the questions.

https://getrevising.co.uk/resources/homeostasis_answers


Similar Biology resources:

See all Biology resources »See all resources »