Second messengers amplify a hormone’s signal bya. increasing its production.b. stabilizing the hormone’s structure.c. triggering an enzyme cascade.d. activating interfering mRNA.
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Second messengers amplify a hormone’s signal by
a. increasing its production.
b. stabilizing the hormone’s structure.
c. triggering an enzyme cascade.
d. activating interfering mRNA.
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Solved in 2 steps
- Which of the following observations can be explained by the properties of hormone receptors? a) A certain tissue can react to more than one hormone b) A certain hormone affects only a specific tissue, not all tissues c) Some tissues react very quickly to a certain hormone, other tissues take many hours to react to the same hormoneEndocrine downregulation ... a) ... occurs in target cells that respond to hormones that are present in constant amounts in the blood. b) ... leads to the increased sensitivity of the target organ to the hormone. c) ... leads to a decrease in the number of receptors in the target cell. d)... occurs in part due to increased receptor synthesis in the target cell.According to the second messenger hypothesis, the second messenger is theea. Receptor located on the cell membrane b. Hormone carrying the signal to the target organ c. Intracellular chemical messenger d. Receptor located in the cell nucleus e. All of the above Which hormone has a receptor that is structurally similar to estrogen receptor? a. Insulin b. Epinephrine c. FSH d. Thyroid hormone
- What casuses a cell to be sensative to particular hormone? A. all cells are exposed to the endocrine signals so they are all sensivtive to it B.the presense of receptors for that hormone c. the shorter the distance between the source cell and the target cell, the more sensitive the target cell is to the hormone.The response of a target cell to a hormone depends ona. the receptor in the target cell that binds thehormone.b. which second messengers are activated in the cell.c. the type of cell.d. all of these factors.When a catecholamine or peptide hormone binds to receptors on the surface of a cell, A. The hormone is transported to the nucleus where it alters the activity of dna. B. The cell membrane becomes less permeable. C. The cell becomes inactive. D. A second messenger appears in the cytoplasm.
- compare and contrast hormones based on their signal transduction propertiesList and describe the functions of the three types of proteins involved in transmission of a hormone signal.The actions of lipid-soluble hormones include a. activation or inhibition of enzymatic pathways. b. binding with a hormone-responsive element. c. muscle contraction or relaxation. d. stimulation of cellular secretions.
- which of the following statements best characterizes the hormone-receptor interaction? a. receptors can have different affinities for multiple ligands b. each hormone will only interact with one type of receptor c. the hormone-receptor contact is generally irreversible d. most cells express receptors for all hormoneFunctions of hormones include which of the following? a. control rates of certain chemical reactions b. transport substances across cell membranes c. help regulate water and electrolyte balances d. all of the abovewhat happens when an agonist, instead of the endogenous (natural) hormone binds to the hormone recepters of a target. A. an antagonist is necessary to remove the agonist B. the agonist blockd any response in the target cell C. the cell responds by producing its own hormone D. transcription factors are blocked from binding to the promotor region E. the agonist has the same effect as the endogenous hormone.