Molecular switches a)are mechanisms which are slow in response b)do not exist c)

ID: 279160 • Letter: M

Question

Molecular switches

a)are mechanisms which are slow in response

b)do not exist

c)involve the transcription of a gene

d)include a class of proteins which are activated or inactivated by phosphorylation

_All cell signaling requires a membrane receptor.

a)True b)False

_G proteins use

a)ATP

b)sugars to be activated

c)protein kinases

d)GTP

_Ion channels can be regulated by G proteins

a)True b)False

a)are mechanisms which are slow in response

b)do not exist

c)involve the transcription of a gene

d)include a class of proteins which are activated or inactivated by phosphorylation

_All cell signaling requires a membrane receptor.

a)True b)False

_G proteins use

a)ATP

b)sugars to be activated

c)protein kinases

d)GTP

_Ion channels can be regulated by G proteins

a)True b)False

1)- option a is correct because these are slow in response.

2)- option a is correct because receptors binds to cell signalling molecules.

3)- option d is correct because G protein receptors binds to GTP.

4)- option a is correct because G protein regulate the ion channels.

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