hormones

Question 1

What are the 3 steps in cell communication?

Answer 1

1. Reception
2. Transduction
3. Response

Question 2

What are the different types of hormone signaling?

Answer 2

1. Endocrine signaling
2. Paracrine signaling
3. Autocrine signaling

Question 3

How do protein hormones and steroid hormones differ in signaling?

Answer 3

Protein hormones bind to cell surface receptors, while steroid hormones pass through the cell membrane and bind to intracellular receptors.

Question 4

What is the role of secretin in intestinal pH homeostasis?

Answer 4

Secretin stimulates the pancreas to release bicarbonate, which neutralizes stomach acid in the small intestine.

Question 5

What is the suckling response and the role of oxytocin?

Answer 5

The suckling response triggers the release of oxytocin, which promotes milk ejection through a positive feedback loop.

Question 6

What roles do ecdysone and juvenile hormones play in insects?

Answer 6

Ecdysone regulates molting, while juvenile hormones regulate development and prevent metamorphosis.

Question 7

What is the purpose of tropic cascades?

Answer 7

Tropic cascades describe how changes in one trophic level affect multiple levels in an ecosystem.

Question 8

What is the blood calcium homeostatic response?

Answer 8

The response involves the release of parathyroid hormone (PTH) to increase blood calcium levels and calcitonin to decrease them.

Question 9

How can a single hormone lead to different responses in different cells?

Answer 9

Different cells may have different receptors or intracellular signaling pathways that respond uniquely to the same hormone.

Question 10

What are the blood glucose homeostatic responses?

Answer 10

Insulin lowers blood glucose levels, while glucagon raises them, maintaining glucose homeostasis.