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- 1. Multiple ChoiceWhich of the following can activate a protein by transferring a phosphate group to it?
kinase
phosphatase
- 2. Multiple ChoiceA signal molecule that binds to a plasma-membrane protein is aligandsecond messengerprotein kinasereceptor protein
- 3. Multiple ChoiceWhat do second messengers do?transport a signal through the lipid bilayerrelay a signal from the outside to the inside of the cellrelay message from the inside of the mebrane throughout the cytoplasmdampen the message
- 4. Multiple ChoiceSignal amplification is most often achieved byan enzyme cascadebinding of multiple signalsbranching pathwaysaction of adenylyl cyclase
- 5. Multiple ChoiceThe 3 steps of signal transduction in order arereception, transduction, responseresponse, transduction, receptionreception, response, transductiontransduction, reception, response
- 6. Multiple ChoiceProtein kinases activate other relay proteins by adding a(n) ____ to them.
phosphate group
ATP moleculecAMPGTP - 7. Multiple ChoiceWhat determines whether a cell is a target cell for a particular signal molecule?phosphorylation cascadecAMPsignal receptorsphosphatase
- 8. Multiple Choice
This is an example ofshort distance
cell to cell
long-distance signalingautocrine
- 9. Multiple ChoiceThis is an example of
short distance
cell to cell
long-distance signalingautocrine
- 10. Multiple ChoiceThis is an example of
short distance
cell to cell
long-distance signalingautocrine
- 11. Multiple ChoiceThis is an example of
short distance
cell to cell
long-distance signalingautocrine
- 12. Multiple Choice
Which type of membrane protein would help intake a message from outside of the cell to inside of the cell?
Receptor Protein
Enzymatic Protein
Channel Protein
Junction Protein
- 13. Multiple Choice
After a ligand binds, the intracellular domain of a receptor protein changes _____, initiating transduction of the signal.
color
size
shape
temperature
- 14. Multiple Choice
Phosphorylation __________.
always inactivates a protein
always activates a protein
can either activate or inactivate a protein
- 15. Multiple ChoiceWhat determines whether a signal molecule binds on the surface or enters the cell?sizepolarityability to cross the membraneall of these are correct
- 16. Multiple ChoiceWhen you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue until the cut is closed.Positive Feedback ResponseNegative Feedback Loop
- 17. Multiple ChoiceAs you get dehydrated, your blood becomes thicker and harder to pump. Your kidneys will respond by stopping urine production, sending the water from urine into your bloodstream to thin your blood back to normal level.Positive Feedback ResponseNegative Feedback Loop
- 18. Multiple Choice
What does the process of phosphorylation do?
Addition of a phosphate group to a molecule.
Removal of a phosphate group to a molecule.
Addition of Non-polar elements to a phosphate group.
Removal of Hydrogen Ions from a protein.
- 19. Multiple Choice
What is the name of the signaling molecule in cell communication?
ligand
receptor
operon
inhibitor
- 20. Multiple Choice
Which is not a cell-surface transmembrane receptor?
tyrosine kinase
GPCR
Ion channel receptor
intercellular receptor
- 21. Multiple Choice
Which kind of receptors are seen here?
G-coupled protein receptor
Receptor tyrosine kinase
Gated ion channels
- 22. Multiple ChoiceWhat type of transmembrane receptor is being shown?G-protein receptor
Receptor tyrosine kinase
gated ion channel - 23. Multiple ChoiceWhat type of transmembrane receptor is being shown?G-protein receptor
Receptor tyrosine kinase
gated ion channel - 24. Multiple Choice
After a cellular response is achieved, how is it terminated?
the ligand and receptor separate
block the transduction pathway
the cell will keep responding
send out a different signal
- 25. Multiple Choice
Phosphorylation cascades are often used for
reception
responses
amplification
termination
- 26. Multiple Choice
What type of feedback loop is the diagram illustrating?
Positive Feedback Loop
Negative Feedback Loop
- 27. Multiple Choice
What type of feedback loop is the diagram illustrating?
Positive Feedback Loop
Negative Feedback Loop
- 28. Multiple Choice
What does the diagram represent?
Amplification
Specificity in Cell Response
Apoptosis
Intracellular Receptors
- 29. Multiple Choice
What is being depicted in the image?
Amplification of the signal molecule
Phosphatase removing phosphate groups from proteins
Kinase groups adding dimer groups to other enzymes
Diffusion of molecules within the cell due to the signaling molecule
- 30. Multiple Choice
Which type of reception usually changes the production of DNA?
Ligand Gated Channels
Intracellular Receptors
Receptor Tyrosine Kinases
G-Coupled Proteins
- Answer choicesTagsAnswer choicesTags