Identify EACH of the following:
a) The gland that secretes hormone A
b) Hormone B
1.5.2 Name the mechanism in the diagram that regulates the level of hormone B - NSC Life Sciences - Question 1 - 2018 - Paper 1
Question 1
Identify EACH of the following:
a) The gland that secretes hormone A
b) Hormone B
1.5.2 Name the mechanism in the diagram that regulates the level of hormone B.
1... show full transcript
Worked Solution & Example Answer:Identify EACH of the following:
a) The gland that secretes hormone A
b) Hormone B
1.5.2 Name the mechanism in the diagram that regulates the level of hormone B - NSC Life Sciences - Question 1 - 2018 - Paper 1
Step 1
a) The gland that secretes hormone A
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Answer
The gland that secretes hormone A is the pituitary gland, also referred to as the hypophysis.
Step 2
b) Hormone B
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Answer
Hormone B is thyroxine.
Step 3
1.5.2 Name the mechanism in the diagram that regulates the level of hormone B
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Answer
The mechanism that regulates the level of hormone B is known as the negative feedback mechanism.
Step 4
1.5.3 State TWO possible effects of removing half of gland X
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Answer
Less hormone B (thyroxine) will be secreted due to the decreased functional tissue.
More hormone A (TSH) will be secreted to compensate for the lower levels of thyroid hormones.
