1. The hormone that stimulates the development of the male sex organs:
A) Prolactin
B) Thyroxin
C) Testosterone
D) Aldosterone
2. An investigation was done to determine the effects of thyroxin on the body weight of rats. The average weight of 150 rats was calculated as 230 g. They were then given a daily injection of thyroxin over a period of 30 days. The average weight at the end of the 30 days was calculated as 190 g. The weight of the rats decreased because of thyroxin:
A) reduces the rats' appetite
B) increases the amount of time they spend actively exercising
C) reduces the absorption of food from the gut
D) increases the rate of respiration in the cells.
Answer (2)
Here's the detailed response to each part of the question:
The hormone that stimulates the development of the male sex organs:
The correct answer is C) Testosterone.
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The hormone that stimulates the development of male sex organs is C) Testosterone. In an investigation on thyroxin, the correct conclusion is that D) it increases the rate of respiration in cells, which can lead to weight loss. These hormones play crucial roles in regulating various bodily functions in males and in metabolic processes respectively.
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