Signal Transduction

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

Tags

NGSS.HS-LS1-3

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.

Tags

NGSS.HS-LS4-1