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- 1. Multiple Choice
What do second messengers do?
transport a signal through the lipid bilayer
relay a signal from the outside to the inside of the cell
relay message from the inside of the mebrane throughout the cytoplasm
dampen the message
- 2. Multiple Choice
An example of DIRECT cell communication is:
White blood cells bumping into each other sharing antigen info
Neurons communicating across a synapse
Hormones traveling through the blood stream to target tissues
- 3. Multiple Choice
An example of endocrine cell communication is:
White blood cells bumping into each other sharing antigen info
Neurons communicating across a synapse
Hormones traveling through the blood stream to target tissues
- 4. Multiple ChoiceThe 3 steps of signal transduction in order arereception, transduction, responseresponse, transduction, receptionreception, response, transductiontransduction, reception, response
- 5. Multiple Choice
This is an example ofparacrine signalingsynaptic signalinglong-distance signalingall of the above - 6. Multiple Choice
What is being depicted in the image?
Amplification of the signal molecule
Enzymatic proteins inhibiting process of the signal transduction pathway
Kinase groups adding dimer groups to other enzymes
Diffusion of molecules within the cell due to the signaling molecule
- 7. Multiple Choice
Ligands are signaling molecules that bind to receptors. Which of the following statements is true of ligands?
All ligands are proteins.
Each ligand is only able to bind to one specific receptor
Ligands can bind to cell-surface receptors, but they cannot enter the cell
Ligands bond to receptor proteins and cause the protein to relay a message to intracellular proteins.
- 8. Multiple Choice
Which letter represents the cell surface receptor protein?
A
B
C
D
E
- 9. Multiple ChoiceWhich of the following correctly describes the reception stage of this signal transduction pathway?epinephrine binds to a g-protein coupled receptor protein present in the cell membranethe g protein changes shape, is activated, activates adenyl cyclase, which activates cAMP, which activates protein kinasesprotein kinases phosphoylate moleculesglycogen synthesis is inhibited and glycogen breakdown is promoted
- 10. Multiple ChoiceWhich of the following correctly describes the transduction stage of this signal transduction pathway?epinephrine binds to a g-protein coupled receptor protein present in the cell membranethe g protein changes shape, is activated, activates adenyl cyclase, which activates cAMP, which activates protein kinasescAMP binds to the g-protein coupled receptor proteinglycogen synthesis is inhibited and glycogen breakdown is promoted
- 11. Multiple ChoiceWhich of the following correctly describes the response stage of this signal transduction pathway?epinephrine binds to a g-protein coupled receptor protein present in the cell membranethe g protein changes shape, is activated, activates adenyl cyclase, which activates cAMP, which activates protein kinasescAMP binds to the g-protein coupled receptor proteinglycogen synthesis is inhibited and glycogen breakdown is promoted
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