Q. No.Some hormones act through a second messenger. In such a case, the first messenger would be:
1. Diacyl glycerol
2. hormone
3. source cell
4. receptor
1. Diacyl glycerol
2. hormone
3. source cell
4. receptor
Which of the following is not a hormone?
1. paracrine regulators
2. NSAIDs
3. pheromones
4. steroids
Hydrophilic hormones:
| 1. | activate intracellular receptors |
| 2. | pass through the plasma membrane |
| 3. | bind to membrane receptors to initiate signal transduction pathways |
| 4. | are usually fat-soluble |
A paracrine regulator is the one that:
1. is alternatively named a hormone
2. travels through the blood
3. is secreted by the parathyroid gland
4. acts within an organ as a local regulator
Hydrophilic hormones are not characterized by the fact that:
1. They can act through intermediary G proteins.
2. A second messenger (e.g. cAMP) is often involved.
3. They can work by activation of transmembrane receptor proteins.
4. They have a long duration of action (e.g. days).
The proximate cause of a goiter would be:
1. reduced levels of TRH
2. a non-functional thyroid gland
3. elevated levels of thyroid stimulating hormone
4. depressed levels of thyroid stimulating hormone
A decrease in blood glucose is most likely to result in:
1. decreased insulin and glucagon production.
2. increased glucagon production.
3. glycogen being released into the blood.
4. increased glucagon production followed by glucose release from the liver.
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When dehydration occurs, the response of the human body would be that:
1. More ADH is secreted.
2. Urine will become less concentrated.
3. Diuretic hormone will be secreted.
4. The urine output will increase.
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A person has weight loss, nervousness, tachycardia and intolerance to heat. He may be suffering from:
| 1. hypothyroidism | 2. diabetes |
| 3. cretinism | 4. hyperthyroidism |
What term/s would describe adrenaline and noradrenaline?
| 1. neurotransmitter | 2. hormone |
| 3. neurotransmitter and hormone | 4. steroid hormone |
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