WorksheetsSignal Transduction
Total questions: 19
Worksheet time: 15mins
Which step would be the final step in a signal transduction pathway?
phophorylation of proteins
activation of protein
change in gene expression
binding a ligand to a receptor
Which step would be the first step in a signal transduction pathway?
phophorylation of proteins
activation of protein
change in gene expression
binding a ligand to a receptor
What is the role of protein kinase in a signal transduction pathway?
activates a molecule by adding a phosphate to the target molecule
deactivate a molecule by removing a phosphate from the target molecule
activates a molecule by removing a phosphate from the target molecule
deactivate a molecule by adding a phosphate to the target molecule
What is the purpose of transduction?
send a signal to a target cell
receive a signal from another cell
respond to a signal pass along internally
pass along a signal through the cell to the location where the cell response will occur.
Once a cell responses to a signal, what would need to occur to stop the response?
activate the relay proteins
deactivate the relay proteins
destroy the cell
genetically modify the DNA of the cell
Phosphorylation is the process by which a ____ is added to a protein to activate it.
acetyl
sulfate
phosphate
nitrate
What class of enzymes performs phosphorylation?
catalases
phosphatases
kinases
amplifases
What is the advantage to amplification of a signal inside of a cell?
moderates the signal so it is not to quick
stops a signal from being transducted
increases the cell response to a signal
increases the reception of signal
What class of enzymes removes phosphate from proteins to deactivate them?
catalases
phosphatases
kinases
amplifases
All mammals have a similar signaling pathway for the uptake of glucose by cells from the blood. What does this suggest about the evolutionary relatedness
Species that use the same signal pathway are probably closely related by evolution.
Species that use the same signal pathway are probably not closely related by evolution
Species that use the same signal pathway will look the same anatomically
Species that use the same signal pathway would not be in the same kingdom.
(a) is a process that adds a phosphate group onton a protein to "activate" it.
In question 9a, which steps in the phosphorylation cascade illustrated in Model 2 include phosphorylation? (Check all that apply)
3
4
5
6
7
Identify the steps in Model 2 that represent reception, transduction and response for the phosphorylation pathway (question 11).
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
(Question 3) Label the diagram with the to indicate where each step takes place.
(Question 20a) Describe the type of diffusion that is used to get the secondary messengers into the cell in Model 3.
Simple Diffusion
Osmosis
Facilitated Diffusion
Phagocytosis
Reorder the following steps in a signal transduction pathway
A signal molecule is generated
Signal molecule binds to a receptor
Activated receptors activate a transduction pathway
Signal results in a the cell responding
(Question 7) Once the response is achieved in a cell, what would need to occur to stop the response?
Activated relay proteins need to be deactivated
A new signal molecule must bind to a new receptor
Transduction pathway moves through the cell
Cell runs out of resources to respond
What is the correct order of the steps shown in the diagram?
transduction, reception, response
reception, transduction, response
response, reception, transduction
reception, response, transduction
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
