What do steroid and peptide hormones typically have in common? their solubility in cell membranes their requirement for travel through the bloodstream the location of their receptors their reliance on signal transduction in the cell

How is hormone binding to its receptor more like an allosteric regulator binding to an enzyme than a substrate binding to an enzyme?

Which of the following is false? Steroids do not require a G protein and second messenger. The average pH of blood is 7.4 Increased levels of AMP will cause an increase in enzyme activity A G protein links the first messenger with the second messenger.

In comparison to protein hormones, steroid hormones: (Select all that apply). O Have a longer half-life O Have a shorter half life O Are water-soluble O Are lipid-soluble O Can cross the cell membrane O Cannot cross the cell membrane Can interact with receptors on the cell surface O Can interact with receptors in the nucleus or cytoplasm

Some Hormones are derived from tyrosine, example --------------------. ADH steroids Insulin Melatonin All of the above

How is it that the reaction of a single target cell to a single hormone molecule may have an effect on a million other molecules?

Which of the choices listed below is the correct order of events for the action of lipid-soluble hormones? O Hormone diffuses across cell membrane, hormone binds to receptors, translation of new protein, transcription of mRNA, cell's activity is altered. O Hormone binds to DNA, hormone binds to receptors, cell activity is altered, transcription, and translation. O Hormone diffuses across cell membrane, binds to receptors, receptors bind to DNA, transcription of mRNA, translation of new protein, cell's activity is altered. O Hormone binds to receptor, translation of protein, gene expression is turned on, cell's activity is altered. Save for Later Attempts: 0 of 3 used FB Submit Answer

Which of the following hormone describes the signal transduction mechanisms for estrogen a steroid hormone ?

Which of the following is not true of all hormones; O May bind with distant target tissue receptors O They are made in endocrine glands or individual cells O They activate a physiological response O They are transported by the blood throughout the body O None of these is correct

Which of the following statements regarding Antidiuretic Hormone signaling is false? - it involves the posterior pituitary - involves a first order feedback loop - it is initiated by barorecptors in the heart signaling to the hypothalamus - ADH will act in the kidneys to increase water retention, in part by changing aquaporin abundance