Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Steroid and Thyroid Hormones
Cytoplasmic receptors for steroids are proteins with two subunits that bind to the steroid molecules. When both receptor sites are occupied by the steroid then the receptor-steroid complex migrates to the nucleus where one subunit ensures that the complex binds to the specific site on the chromatin. Then the receptor subunits separate and the other subunit interact directly with the adjacent region of DNA molecule resulting in the transcription of the DNA segment into mRNA.
Thyroid hormone acts in a similar manner except that the receptor is located in the nucleus. The major hormone secreted by thyroid is thyroxine (T4). It travels in blood attached to carrier proteins. Thyroid also secretes a small amount of triiodothyronine (T3). Carrier proteins have higher affinity for T4 and very little T4 is free in the plasma. Only the free T4 and T3 enter the cells. The rest of the bound T4 acts as a reservoir for slow release. The free T4 that enters the cell s also converted to T3 enzymatically. Therefore, T3 is the chemically more potent and active form of thyroid hormone.
Figure:Steroid and Thyroid Hormones
Which is the extraembryonic membrane whose function is to store nitrogen wastes of the embryo? Is this function present in placental mammalian embryos? The allantois is the ext
Define about the Geriatric Nutrition? Aging has been defined as "a series of time related process that ultimately brings life to a close." Persons of 60 years of age and older
Q. What is the special route that lipids follow during digestion? What are chylomicrons? Triglycerides emulsified by the bile within micelles suffer the action of lipases that
Q. Carbohydrates requirements for ulcerative colitis? Carbohydrates: They form the easily absorbable source of energy. Bulk-producing vegetables are restricted so as to allow b
Eutrophication - Effect on Water Bodies Moderate quantities of sewage decay naturally in a water body and water gets purified after some time. But the problem arises when the
Importance of ecology
Q. What is the bone matrix? What are its main components? Bone matrix is the content that fills the intercellular space of the osseous tissue the bone matrix is made of mineral
Explain the Nutrition of Fungi? Fungi grow in moist environment and are chemoorganoheterotrophs. What do we mean by chemoorganoheterotrophs? The term chemotroph describes organ
Q. What are the major features of fishes associated to the habitat where they live? Fishes are all aquatic animals and thus they have a hydrodynamic elongated body appropriate
POLYMORPHISM IN COLENTRATAtion..
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd