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Cell Signalling and Transduction

Cell Signalling and Transduction
SH2 domains specifically bind to

GDP
phosphorylated tyrosine residues
phosphorylated serine residues
Ca2+

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Cell Signalling and Transduction
Which of the following is not a type of signaling molecule?

Thyroxin
Adenylate cyclase
Insulin
Testosterone

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Cell Signalling and Transduction
Which of the following comes under the category of cell surface receptor?

All of these
G protein linked receptors
Ion-channel linked receptors
Enzyme linked receptors

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Cell Signalling and Transduction
In paracrine signaling, the signaling molecules affects only

None of these
both (a) and (b)
target cells close to the cell from which it was secreted
target cells distant from its site of synthesis in cells of an endocrine organ

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Cell Signalling and Transduction
In vasodilation, proper nerve signals sent to blood vessels cause

reduced blood pressure
the release of nitric oxide from endothelial cells
relaxation of smooth muscle cells
All of these

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Cell Signalling and Transduction
Small charged molecules, often biogenic amines function as

neurotransmitters
none of these
both (a) and (b)
hormones

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