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check this powerpoint. http://www.slideshare.net/AlbanyHighSchool/chapter45
Wiki User
∙ 15y ago
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∙ 15y agoIt either expands or reproduces a ton.
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What signaling molecules enters the cell to initiate its action?
thyroxine
What type of cell-to-cell signaling to hormones exert?
Endocrine
What is the term for hormones that are lipid-soluble and can pass through cell membranes?
steroid hormones
Where is the receptor for cortisol found?
Receptors of protein hormones are present in plasma membrane but for steroid hormones no membrane receptors are needed as they can enter cell membrane , mobile receptors pic steroid hormones from cell membrane and carry them to nucleus .
What is the difference between protein hormones and steroid hormones and how they communicate with their target cells?
Steroid hormones arelipid-soluble and can dissolve easily into the cell membrane of the target cell to connect with receptors. Protein hormones are water-soluble and connect with receptors at the membrane because it can't diffuse through the membrane.
What signaling molecules enters the cell to initiate its action?
thyroxine
What type of cell-to-cell signaling to hormones exert?
Endocrine
Can non-steroid hormones enter the nucleus?
No, non-steroid hormones use secondary messengers to transfer their signal into the cell.
Why can steroid and thyroid hormones but not amino acid-based hormones move across cell membranes?
b/c steroid and thyroid hormones are fat soluble
What is the term for hormones that are lipid-soluble and can pass through cell membranes?
steroid hormones
Steroid hormones enter the bloodstream by diffusion and?
Steroid Hormones only enter the bloodstream by diffusion. If you are a student taking anatomy/phyiso 2 and refering to this question: All steroid hormones are derived from (cholesterol). Which steroid hormone is produced is determined by the (enzymes) present in the cell. The common precursor molecule for all steroid hormones is (pregnenolone). Steroid hormones enter the blood stream by (diffusion) and (do) require a carrier. The rate of secretion of steroid hormones is (slower) then catecholemines because steroid hormones are not (stored). Hope that helps-
Where is the receptor for cortisol found?
Receptors of protein hormones are present in plasma membrane but for steroid hormones no membrane receptors are needed as they can enter cell membrane , mobile receptors pic steroid hormones from cell membrane and carry them to nucleus .
Do lysosomes produce steroid hormones?
Lysosomes do not produce steroid hormones. Lysosomes are organelles in cells that break down waste materials and debris inside the cell.
What hormones can enter the target cell and bind to receptors in the nucleus?
steriod hormones - since they are lipophilic and fusses with the membrane to enter teh cell.
Why does most amino acid based hormones bind to cell membrane receptors?
This is because they do not have the ability to pass through the membrane, unlike steroid hormones. Steroid hormones bind inside the cell cytoplasm before docking onto the receptors.
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 is a common second messenger used in signaling pathways activated by water-soluble hormones?
Cell-Cell Recognition
