Biology

Biology, 27.07.2019 15:30, lilianajimva

Binding of a signal molecule to a cell surface receptor activates a which in turn activates

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Biology, 23.06.2019 07:00, alexisbarry7495

In the example of adrenaline signaling, which steps represent an amplification of the signal? question 1 choiceschoice a., activated receptor activates g proteins, g protein binding by gtp, cyclic amp activation of protein kinase achoice b., activated receptor activates g proteins, activated adenylyl cyclase produces camp, active protein kinase a phosphorylates target proteinschoice c., receptor signal binding, activated receptor activates g proteins, activated adenylyl cyclase producing campchoice d., receptor signal binding, activated adenylyl cyclase producing camp, active protein kinase a phosphorylating target proteins

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Biology, 08.07.2019 20:10, smmailloux7249

Which of the following statements is true? (a) extracellular signal molecules that are hydrophilic must bind to a cell-surface receptor so as to signal a target cell to change its behavior. (b) to function, all extracellular signal molecules must be transported by their receptor across the plasma membrane into the cytosol. (c) a cell-surface receptor capable of binding only one type of signal molecule can mediate only one kind of cell response. (d) any foreign substance that binds to a receptor for a normal signal molecule will always induce the same response that is produced by that signal molecule on the same cell type.

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Biology, 22.10.2019 01:00, s1027

Which of the following is not part of the general response of cells during cellular communication? a cell-surface receptor molecule becomes activated by binding to a molecular signal. the cell does not return to its normal activities after the signal has exerted its effect. an activated cell-surface receptor transfers the signal to the interior of the cell. the signal is transmitted inside the cell and amplified as a series of proteins are activated in sequence, affecting cellular activities according to the type of signal involved. receptors on the outside of the cell bind to specific signal molecules.

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Biology, 24.10.2019 20:43, rsetser6989

Testosterone functions inside a cell by a) coordinating a phosphorylation cascade that increases spermatogenesis b) binding with a receptor protein that enters the nucleus and activates specific genes c) acting as a signal receptor that activates tyrosine kinases d) acting as a steroid signal receptor that activates ion channel proteins

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