Unit 3 Sht_7
HWrkSht 3_7
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1.
The diagram shows a hormone, such as insulin, binding with its target cell.
(i) Explain why a hormone only works on its target cell.
(ii) Hormone messages travel slower than nerve messages. State one other difference between these messages.
2. The table below shows the different endocrine glands in the body. Copy and complete the table to show the hormones produced in each of these glands.
3. a) Describe how carbohydrate is stored in the body?
b) Explain why storing sugars in this form helps prevent osmotic difficulties for the cells of the body.
c) Diabetes is a condition in which the blood glucose level is not fully controlled by insulin. There are two types of diabetes. The table shows information about both types.
A person with diabetes was treated with daily insulin injections.
(i) Using information from the table, state which type of diabetes this person had and why this treatment was required.
(ii) Describe what would happen to this person’s blood glucose level if they had not been treated.
(iii) Name the organ which is not functioning properly, causing type 1 diabetes.
d) When blood sugar levels rise, which hormone is released to stimulate the conversion of glucose to glycogen?
e) When blood sugar levels fall, which hormone is released to stimulate the release of glucose into the bloodstream?
f) The following bar chart below shows the incidence of diabetes in people of
different ages.
(i) Which age group has the highest incidence of diabetes?
(ii) What is the incidence of diabetes in the following groups?
A men aged between 35 and 44
B women aged between 55 and 64
(iii) What age group shows no difference in the incidence of diabetes in men and women?
