1- Not a main type of receptor
ion channels
enzymatic receptors
tumor necrosis factors
transcription factors

2- Have a cellular response measurable in 100's of milliseconds
ion channels
G-protein coupled receptors
transcription factors
guanylyl cyclase

3- Activate Ras
cytokine receptor I
cytokine receptor II
tumor necrosis factor
the first two are correct

4- Directly signals for gene expression
transcription factors
tumor necrosis factor
cytokine receptor I
none of the above

5- False about signal transduction cascades
message is amplified
one agonist has a single effect
agonists may interact with many receptors
may produce diverse second messengers

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Answers:

1- Not a main type of receptor
Answer: tumor necrosis factors

2- Have a cellular response measurable in 100's of milliseconds
Answer: G-protein coupled receptors

3- Activate Ras
Answer: cytokine receptor I

4- Directly signals for gene expression
Answer: transcription factors

5- False about signal transduction cascades
Answer: one agonist has a single effect