Hormones travel through the blood stream and bind to receptors located on target cells. Which of the following would NOT bind to transmembrane proteins on the target cells but rather enter into the cytoplasm and bind inside the cell?
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Which hormones bind to receptors on the cell surface, and which bind to receptors within the cell? Cell-surface receptors Receptors inside the cell Answer Bank small, nonpolar thyroid hormones such as thyroxine, T4 arthropod steroids such as ecdysone steroid hormones such as testosterone glycoprotein-based hormones such as follicle-stimulating hormone modified amino acids such as melatonin oxytocin and other peptide hormones
Marlyn J.
1. hydrophilic hormones a. are excreted by exocytosis into the blood stream b. are taken up by the target cell via endocytosis c. diffuse into the target cells plasma membrane d. bind to receptors in the cytoplasm 2. Steroid hormones bind to receptors in the cytosol of the target cells and then this complex moves into the nucleus to stimulate transcription. a. true b. false 3. which statement(s) regarding hydrophilic hormones is correct? a. they bind to the receptors on the cell membrane of the host cells b. they trigger the release of messenger molecules inside the target cells c. epinephrine is an example of a water- soluble protein d. all the choices are correct
Madhur L.
Why is it that steroid hormones use receptors inside of target cells, whereas protein, peptide, and amino acid hormones do not? a. Cells are full of steroid molecules so it is easy for steroid molecules to enter. b. Steroids can cross the cell membrane because they are lipids and the membrane is lipid. c. The target cells affected by steroid hormones have all of their receptors in the cell cytoplasm. d. Amino acids and peptide hormones do not have a 3 dimensional structure that can bind to internal receptors. e. All of the answers are correct.
Jhankar T.
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