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- 1. Multiple Choice
Choose the correct order of communication.
reception, response, transduction
transduction, reception, response
response, transduction, reception
reception, transduction, response
- 2. Multiple Choice
Long distance signals involving hormones are ________ signals.
paracrine
synaptic
endocrine
autocrine
- 3. Multiple Choice
Cyclic AMP activates what type of molecules?
G-proteins
kinases
calcium
sodium
- 4. Multiple Choice
Which kind of receptors are seen here?
G-coupled protein receptor
RTK's
Gated ion channels
aquaporins
- 5. Reorder
Order the steps of signal transduction
Ligand binds to receptor
G-Protein activation
ATP converted to cAMP
Kinases activated
Cell response
- 6. Multiple Choice
Programmed cell death is known as
mutation
termination
cytokinesis
apoptosis
- 7. 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
- 8. Multiple ChoiceThis is an example ofparacrine signalingsynaptic signalinglong-distance signalingall of the above
- 9. Multiple Choice
A nerve cell releases acetylcholine to trigger a neighboring muscle cell to contract. What type of signal is this?
autocrine
paracrine
endocrine
feedback
- 10. Multiple Choice
Which letter represents the cell surface receptor protein?
A
B
C
D
E
- 11. Multiple Choice
Which letter represents a signal cascade?
A
B
C
D
E
- 12. Multiple Choice
What are the chemical messengers of the endocrine system?
kinases
neurotransmitters
hormones
phospholipids
- 13. Multiple Choice
Temperature regulation is what type of feedback system?
negative
positive
autocrine
zero sum
- 14. Multiple Choice
What type of signaling occurs between two neurons?
autocrine
endocrine
paracrine
gap
- 15. Multiple Choice
What type of signaling uses the blood stream to send signals?
autocrine
endocrine
paracrine
mezzanine
- 16. 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 membrane
the g protein activates adenyl cyclase, which activates cAMP, which activates protein kinases
cAMP binds to the g-protein coupled receptor proteinglycogen synthesis is inhibited and glycogen breakdown is promoted - 17. Multiple Choice
A cell infected with a virus signals apoptosis in nearby cells. What type of signaling is this?
paracine
endocrine
autocrine
g-coupled
- 18. Multiple Choice
Direct signaling in plants can occur through:
microvilli
ligands
gap junctions
g-proteins
- 19. Multiple Choice
Which of the following is an example of a positive feedback loop?
contractions during childbirth
sweating when hot
fight or flight response
glucose uptake by cells
- 20. Multiple Choice
Cholera causes illness by interfering with G proteins. This causes in increase in the amount of ____ produced.
ligands
cAMP
hydrogen ions
gap junctions
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