what are peptides vs steroid hormones? which things from our diet make each? whi
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what are peptides vs steroid hormones? which things from our diet make each? which are more common? which uses a seco d-messenger system and why?
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Course: B-293-IN-SPRING 2 : Study Gnide Ecam 1 pdf 72ins a search OA htystipreentationle amingheuse.com.plugrtle pnpr6o5850m Automatic Zoom 2 of 2 What are peptide vs steroid hormones? Which things from our diet make each? Which are more common? Which uses a second-messenger system and why? Make sure you know the specific hormones i asked you to know in the lecture materiols -this might be another greot place to creote a study chart! For eoch, know where it's made (what glond), what stimulates its production (whot's going on in the body thot would stimulate production of this hormone?), what stops it from being made if discussed (whot are the feedback loops), whet her it's a peotide or steroid hormone, and whot the hormone's function is. And again, maybe a miscellaneous or "fun-facts" column in your hormones chart What are the three mechanisms for control of this system and how do they compare/contrast to each other? Where is the "master endocrine gland" that does hormonal control of most of this system? Which part of the brain is the "Gateway to the UNCONSCIOUS mind" that this system uses to relay messages from the body? Know the parts of the Pituitary and what types of tissue each are, what products each produces. Same with the Adrenal Glands 5 7 0 ERTYUTOP DF GHKExplanation / Answer
Hormones can be defined as chemicals or signalling molecules that are produced in multicellular organisms by the endocrine glands. The hormones are released into the cirulatory system (Blood) and they travel long distance and can have effect on specific target sites or tissues. ,The major classificatioon of hormones is as Peptide hormones and Steroid hormones. Peptide hormones are hormones whose molecules are peptides or proteins, hence also called as protein hormones ( Eg: Insulin , growth hormone etc);They are soluble in water, while steroid hormones are fat soluble molecules that are derived from cholesterool ( Eg: Testosterone, Estrogen, Progestron etc).
As peptide hormones are made of proteins ( ie, amino acids connected by peptide bond) almost all the dietary components are included in this. But, foods like Grains, Soyabaen, Milk and Egg are rich in peptides.
And food items like celery, spinach, quinoa and eggs are rich in steroids.
While comparing these two the most common or the majority of the foods we consume include petides.
It is the protein or peptide hormone that uses second messenger. This can be explained based on the chemical constitution of the hormone. We know that our plasma membrane is made up of phospholipid bilayer. So, molecules that are soluble in lipid (lipophilic) can be easily passed through the cell membrane into the cell while, water soluble molecules ( hydrophilic and at the same time lipophobic) molecules cannot be easily passed through the membrane. Steroid hormones as they are fat solulbe they readily passes through the plasma membrane and binds to carrier proteins within the cell and directly binds with the DNA and have an effect in gene transcription.
On the other hand, protein hormones that are insoluble in lipids cannot cross the plasma membrane. Hence are bound with the membrane receptors found on the surface of the plasma memrane. So, for this hormones, to create an effect inside the cell, they requires second messengers ( molecules like cAMP or Ca ions can act as second messenger). So, binding of a peptide hormone on its membrane receptor activates a second messenger which inturn result in a casCade of events within the cell to have the result of hormone action.
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