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Which one of these hormones does not act on a second messenger system is it Glycogen Epinephrine growth hormone or testosterone or acth which one?
testosterone
Which of the following does not act as a second messenger in the second messenger system calmodulin or inositol triphosphate or cyclic AMP?
inositol triphosphateInositol triphosphate (IP3) and diacylglycerol (DAG) are important second messengers. Their formation begins with the binding of an extracellular regulatory
Why is a second messenger not necessary in a steroid hormone?
Steroid hormones act in the transcriptional level in the nucleus of a cell, due to their ability to travel through cell membranes (hydrophillic). Second messengers are necessary for hormones that cannot penetrate cell membranes (peptides).
What are chemicals that act as messengers throughout the body?
The chemical messenger is a hormone which are produced by endocrine glands
Why is cyclic AMP a secondary messenger?
because original message is carried by hormone, which cant act directly, so in turn it activates cyclic AMP.
True or false steroid hormones perform accoding to the second messenger mechanism?
steroid hormones are hydrophobic and bind to transport proteins which bind to receptors within the nucleus. hydrophillic hormones bind to plasma membrane receptors and act through second messenger systems
What is hormone insulin in?
Pancrease secrete hormone insulin.It act in reducing glucose level.
Does vitamin d act as a hormone?
Yes
Nitric oxide may act as a biological messenger?
true
What gland functions as part of the endocrine system by secreting a hormone that functions as part of the endocrine and immune systems?
cortisole i guess you mean which is secreted from adrenal its not a part of immune system but it has a permissive act in immunity
What are the disadvantages of synthetic plant hormones?
A hormone synthesized (unnaturally made) by something other than a plant, but made for the plant. And the "artificially" hormone made to act as the natural plant hormone.
What are the two general modes of hormone action?
Lipid-soluble hormones are able to penetrate through the cell membrane and bind to receptors located inside the cell. Such hormones diffuse across the plasma membrane and target those receptor cells found within the cytoplasm. Lipid-soluble hormones target the cytoplasmic receptors which readily diffuse into the nucleus and act on the DNA, inhibiting and stimulating certain proteins. lipid-insoluble are unable to penetrate through the plasma membrane and function with their target cells in a much different and complex manner. Lipid-insoluble hormones must bind with cell-surface receptors which follow a different path involving a second messenger. The hormone's inability to penetrate the membrane requires a second messenger which translates the outer message and functions within the cell.
