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Review 7 signal transduction 1 with answers

Review 7 signal transduction 1 with answers - Review sheets...

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Review sheets on Signal transduction 1) Describe, Signal, Reception, amplification, transduction, responses and signal termination. Also know the order in which they occur. a. the Signal is simply the first stimulus such as glucagon, or epinephren. Reception is carried out by a receptor which is what the signal binds to first. Amplification refers to the concept that one receptor can activate many different effectors. Transduction is the passing of information, activation of secondary messengers. The response is when downstream effector proteins which directly alter physiological responses are activated or inhibited. And Signal termination is what the cell does to halt the pathway. Shact lect24 sld 2 2) what are the main functions of the three signal transduction pathways covered in lecture? What are the major signals and receptors? a. Epinephren binds to B-adrenergic receptor for energy store mobilization b. Insulin binds to the insuin receptor to increase glucose uptake c. Epidermal growth factor (EGF) binds to the EGF receptor and increases expression of growth-promoting genes Shcact lect 24 sld 5 3) What are some of the advantages of second messengers a. Allow for signal amplification, many secondary messengers may be activated by a single receptor very quickly. b. They may regulat processs in multiple cell compartments as they travel in the cytoplasm.
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