I need help with these multiple choice homework questions 1. What kinds of respo
ID: 178974 • Letter: I
Question
I need help with these multiple choice homework questions
1. What kinds of responses may be initiated when signals traveling down signaling pathways reach their target proteins, which are usually involved in basic cellular processes?
a. A change in gene expression
b. Activation of DNA synthesis
c. Reconfiguration of the cytoskeleton
d. An increase or decrease in cell mobility
e. All of the above
2. What strategies can be used to turn off the cell signaling response when it is necessary to do so?
a. Elimination of the extracellular messenger molecule
b. Internalization of activated receptors and degradation of the receptor and its ligand
c. Internalization of activated receptors and their ligand, degradation of the ligand and return of the receptor to the cell surface
d. Degradation of activated signaling proteins
e. All of the above
3. Which of the following are natural ligands that bind to G-protein coupled receptors?
a. Hormones
b. Neurotransmitters
c. Chemoattractant
d. Opium derivatives
e. All of the above
Explanation / Answer
1. The answer is: e. All of the above.
The given options are all responses that may be initiated when signals traveling down signaling pathways reach their target proteins, which are usually involved in basic cellular processes.
2. The answer is: e. All of the above.
The given options are all strategies that can be used to turn off the cell signaling response when it is necessary to do so.
3. The answer is: e. All of the above.
All are example of natural ligands that bind to G-protein coupled receptors.