If a disease of the blood vessels caused the endothelial cells of the vessel to die, what effect would that have on the cellular activities associated with vasodilation?

Cell Signalling and Transduction
If a disease of the blood vessels caused the endothelial cells of the vessel to die, what effect would that have on the cellular activities associated with vasodilation?

It would be more difficult to increase blood flow and reduce blood pressure

Smooth muscle cells could not be made to relax

All of these

Nitric oxide would no longer be produced

It would be more difficult to increase blood flow and reduce blood pressure

Smooth muscle cells could not be made to relax

All of these

Nitric oxide would no longer be produced

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Cell Signalling and Transduction
The hormone or ligand can be considered as

second messenger

both (a) and (b)

none of these

first messenger

second messenger

both (a) and (b)

none of these

first messenger

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Cell Signalling and Transduction
The enzyme that catalyzes the splitting of PIP2 into two molecules of inositol triphosphate (IP3) and diacylglycerol in cell signaling, is

phosphokinase C

lipokinase

phosphodiesterase C

phospholipase C

phosphokinase C

lipokinase

phosphodiesterase C

phospholipase C

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

both (a) and (b)

target cells close to the cell from which it was secreted

None of these

target cells distant from its site of synthesis in cells of an endocrine organ

both (a) and (b)

target cells close to the cell from which it was secreted

None of these

target cells distant from its site of synthesis in cells of an endocrine organ

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Cell Signalling and Transduction
The major second messengers are

cAMP

DAG

All of these

cGMP

cAMP

DAG

All of these

cGMP

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Cell Signalling and Transduction
A signal cascade induced by adrenaline or thyroxine

must begin with receipt of the signal molecule by a surface receptor

results in the activation of a sequence of enzymes needed for the cell effect

All of these

involves the activation of a G protein

must begin with receipt of the signal molecule by a surface receptor

results in the activation of a sequence of enzymes needed for the cell effect

All of these

involves the activation of a G protein

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Cell Signalling and Transduction

Cell Signalling and Transduction If a disease of the blood vessels caused the endothelial cells of the vessel to die, what effect would that have on the cellular activities associated with vasodilation?

Cell Signalling and Transduction The hormone or ligand can be considered as

Cell Signalling and Transduction The enzyme that catalyzes the splitting of PIP2 into two molecules of inositol triphosphate (IP3) and diacylglycerol in cell signaling, is

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

Cell Signalling and Transduction The major second messengers are

Cell Signalling and Transduction A signal cascade induced by adrenaline or thyroxine

Cell Signalling and Transduction
If a disease of the blood vessels caused the endothelial cells of the vessel to die, what effect would that have on the cellular activities associated with vasodilation?

Cell Signalling and Transduction
The hormone or ligand can be considered as

Cell Signalling and Transduction
The enzyme that catalyzes the splitting of PIP2 into two molecules of inositol triphosphate (IP3) and diacylglycerol in cell signaling, is

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

Cell Signalling and Transduction
The major second messengers are

Cell Signalling and Transduction
A signal cascade induced by adrenaline or thyroxine