Which statement is not correct for hormone action? Group of answer choices Steroid hormone action is generally shorter lasting than that of peptide hormones as peptide hormones function at a genetic level, stimulating gene transcription. G proteins form a link between hormone binding to the receptor and internal cellular responses. Adenylate cyclase converts ATP to cAMP which acts as a second messenger for the adrenalin signal transduction system. All hormones require relatively low concentrations to exert their effects. None of the above (all statements are true)

Steroid hormones result in:Group of answer choicesdirect gene activationhormone binding to a membrane-bound receptoractivation of a G proteinactivation of adenylate cyclaseproduction of 2nd messengersall of theseNext

Which of the following statements best describes an important characteristic of the general steroid hormone receptor mechanism of action?Group of answer choicesSteroid receptors are bound to response elements even before binding to their ligand.Coactivator complexes that are recruited to ligand bound receptor remove acetyl groups from histones.Steroid hormone receptors are bound to heat shock proteins (hsps) in the inactive state before binding to a hormone.Helix 12 of the ligand binding domain is always positioned the same way regardless of binding to an agonist or an antagonist.Steroid receptors are always found in the nuclear cell membrane, which is why they are called nuclear receptors.

Which of the following are generally true statements about hydrophilic hormones?  Choose 3:Group of answer choicesThey are readily soluble in bloodThey often activate or inactivate existing proteins so can be very fast-actingThey work mainly through changes in gene expression so they take a long time to workThey require carrier proteins for efficient transport through the bloodstreamThey are stored within intracellular vesicles and released by exocytosisThey are made when needed and diffuse out of cells

Which of the following is false?  Hormone receptors are protein molecules.   Every cell has access to and exchanges contents with blood.   Hormones are secreted into the blood.   Hormones act by interacting with a specific receptor located on the endocrine cells.

What must be present for any type of hormone to be able to act on a target cell?Multiple ChoiceProtease enzymesHormone response elementsProtein receptorsProtein channels