Mechanism of Hormone Action
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Biology
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9th - 10th Grade
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Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What ensures that hormones act only on their specific target cells?
The presence of specific hormone receptors
The temperature of the body
The size of the hormone molecules
The speed of hormone circulation
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Where are the receptors for steroid hormones like estrogen typically located?
On the mitochondria
On the cell surface
In the cytoplasm or nucleus
In the bloodstream
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of the hormone-receptor complex in the action of steroid hormones?
It deactivates the hormone
It transports the hormone out of the cell
It activates specific genes
It breaks down the hormone
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following acts as a second messenger in the action of epinephrine?
ATP
cAMP
DNA
RNA
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What enzyme is activated by cAMP in the action of non-steroidal hormones?
Adenylyl cyclase
Glycogen synthase
Protein kinase A
Phosphodiesterase
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the effect of cAMP reversed in the cell?
By the enzyme phosphodiesterase
By decreasing ATP levels
By activating more receptors
By increasing hormone concentration
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What effect does the cholera toxin have on intestinal cells?
It enhances protein synthesis
It blocks hormone receptors
It increases cAMP production
It decreases cAMP production
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