BIO - 1. Type of mating signal transduction pathway in...

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1. Type of mating signal transduction pathway in yeast B. mating type “a” secretes a signal called “a” factor 2. Paracrine signaling? A. Involves secreting cells acting on nearby target cells by discharing a local regulator into extracellular fluid 3. True of synaptic signaling and hormonal signaling D. in animals and plants. Great distances. Affect with g protein. Signaling synaptic and hormonal 4. 3 stages of cell signaling B. Cell reception, transduction, response 5. Process of transduction from beginning? B. signal molecules changes receptor protein 6. cell releases signal molecule into environment and number of cell in immediate vicinity is ______ signaling C. paracrine signaling 7. signal transduction pathway in animal cells that use epinephrine A. activates the breakdown of glycogen in liver and skeletal muscle cells 8. a small molecule that binds to another molecule, usually a larger one B. a ligand 9. of the following, a receptor protein in a membrane that recognizes a chemical signal is most similar to A. the active site of an enzyme in the cytoplasm that binds to a specific substrate 10. most signal molecules D. Bind to specific sites and are water soluble 11. which of the following signal systems use G protein linked receptors? E. A, B, and C 12. What would be true for the signaling system in an animal cell that lacks the ability to produce GTP ? A.It wouldn’t be able to activate/inactivate g protein on cytoplasmic side 13. G proteins and G protein linked receptors A. it would not be able to activate and inactivate the G protein on the cytoplasmic side of the plasma membrane 14. Membrane receptors that attach phosphates to specific animo-acids in proteins are B) called receptor tyrosine kinases 15. Up to 60% of all medicines used today exert their effects by influencing what structures in the cell membrane? D) G proteins 16. Which of the following are chemical messengers that pass through the plasma membrane ofcells and have receptor molecules in the cytoplasm? 17. Testosterone functions inside a cell by B) binding with a receptor protein that enters the nucleus and activates specific genes. [local regulators/receptor tyrosine] 18. Which is true of transcription factors? D) They control which genes are expressed. [transfer phosphates?]
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19. Epinephrine elevate cytosolic conc of camp 20. Lack of Ca+2 in plant cell results in what? Possible answers: Ca triggers many pathways in plants. Used as a 2 nd receptor in gprotein and receptor tyrosine pathway for greening in response to light 21. an animal deficient in adenylyl cyclase A. would not respond properly to epinephrine 22. which of the following is not considered a second messenger? B. GTP
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This note was uploaded on 02/26/2011 for the course BIO 104 taught by Professor Smith during the Spring '11 term at Saddleback.

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BIO - 1. Type of mating signal transduction pathway in...

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