Question

increased number of testosterone receptors in skeletal muscle following resistance training. in response to a chronic abundance of hormone, the target cell reduces the concentration of receptors. decreased sensitivity in response to a chronic lack of a hormones, the target cell increases the concentration of up regulation (1/2) down regulation (2/2)

Explanation:

To solve this problem, we need to classify the given statements into up - regulation and down - regulation based on the definitions of these two processes.

Step 1: Define Up - regulation and Down - regulation

• Up - regulation: It occurs when a target cell, in response to a chronic lack of a hormone, increases the concentration of receptors. Also, an increase in the number of hormone receptors (like testosterone receptors in skeletal muscle after resistance training) is a case of up - regulation.
• Down - regulation: It takes place when, in response to a chronic abundance of a hormone, the target cell reduces the concentration of receptors. This reduction in receptor concentration also leads to a decreased sensitivity of the cell to the hormone.

Step 2: Classify each statement

• For Up - regulation (1/2):
• "Increased number of testosterone receptors in skeletal muscle following resistance training." - This is up - regulation as there is an increase in the number of receptors.
• "In response to a chronic lack of a hormones, the target cell increases the concentration of receptors." - This is the classic definition of up - regulation.
• For Down - regulation (2/2):
• "In response to a chronic abundance of hormone, the target cell reduces the concentration of receptors." - This is the definition of down - regulation.
• "Decreased sensitivity" - Since down - regulation (reduction in receptor number) leads to decreased sensitivity, this is part of down - regulation.

Final Classification

• Up regulation (1/2):
• Increased number of testosterone receptors in skeletal muscle following resistance training.
• In response to a chronic lack of a hormones, the target cell increases the concentration of receptors.
• Down regulation (2/2):
• In response to a chronic abundance of hormone, the target cell reduces the concentration of receptors.
• Decreased sensitivity

If we were to present this in a table (as per the output requirements for tables):

Up regulation (1/2)	Down regulation (2/2)
In response to a chronic lack of a hormones, the target cell increases the concentration of receptors.	Decreased sensitivity

Answer:

To solve this problem, we need to classify the given statements into up - regulation and down - regulation based on the definitions of these two processes.

Step 1: Define Up - regulation and Down - regulation

• Up - regulation: It occurs when a target cell, in response to a chronic lack of a hormone, increases the concentration of receptors. Also, an increase in the number of hormone receptors (like testosterone receptors in skeletal muscle after resistance training) is a case of up - regulation.
• Down - regulation: It takes place when, in response to a chronic abundance of a hormone, the target cell reduces the concentration of receptors. This reduction in receptor concentration also leads to a decreased sensitivity of the cell to the hormone.

Step 2: Classify each statement

• For Up - regulation (1/2):
• "Increased number of testosterone receptors in skeletal muscle following resistance training." - This is up - regulation as there is an increase in the number of receptors.
• "In response to a chronic lack of a hormones, the target cell increases the concentration of receptors." - This is the classic definition of up - regulation.
• For Down - regulation (2/2):
• "In response to a chronic abundance of hormone, the target cell reduces the concentration of receptors." - This is the definition of down - regulation.
• "Decreased sensitivity" - Since down - regulation (reduction in receptor number) leads to decreased sensitivity, this is part of down - regulation.

Final Classification

• Up regulation (1/2):
• Increased number of testosterone receptors in skeletal muscle following resistance training.
• In response to a chronic lack of a hormones, the target cell increases the concentration of receptors.
• Down regulation (2/2):
• In response to a chronic abundance of hormone, the target cell reduces the concentration of receptors.
• Decreased sensitivity

If we were to present this in a table (as per the output requirements for tables):

Up regulation (1/2)	Down regulation (2/2)
In response to a chronic lack of a hormones, the target cell increases the concentration of receptors.	Decreased sensitivity