Self-phosphorylation is an excellent mechanism for triggering specific catalytic function of the proteins involved in signal cascades because it

Cell Signalling and Transduction
Self-phosphorylation is an excellent mechanism for triggering specific catalytic function of the proteins involved in signal cascades because it

allows hydrophilic signaling molecules to cross the plasma membrane

None of these

changes the shape and thus the enzymatic activity of the proteins involved

makes the receptor more likely to capture the signaling, molecule

allows hydrophilic signaling molecules to cross the plasma membrane

None of these

changes the shape and thus the enzymatic activity of the proteins involved

makes the receptor more likely to capture the signaling, molecule

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Cell Signalling and Transduction
Nitroglycerin has long been administered to human patients suffering from chronic chest pain (angina). This medication works because it

breaks down into nitric oxide, which increases blood flow to the heart

mimics the action of signal receptors

interferes with chemical cascades that trigger contraction of heart muscle

is broken down into hormones that affect the heart

breaks down into nitric oxide, which increases blood flow to the heart

mimics the action of signal receptors

interferes with chemical cascades that trigger contraction of heart muscle

is broken down into hormones that affect the heart

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

both (a) and (b)

second messenger

none of these

first messenger

both (a) and (b)

second messenger

none of these

first messenger

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Cell Signalling and Transduction
The signaling molecules called steroid hormones

are hydrophilic and so cannot penetrate the plasma membrane

never enter the blood of humans

are made in one location of the body but have their effects some distance away

bind to cell surface receptors to trigger chemical cascades

are hydrophilic and so cannot penetrate the plasma membrane

never enter the blood of humans

are made in one location of the body but have their effects some distance away

bind to cell surface receptors to trigger chemical cascades

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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

phosphodiesterase C

phospholipase C

lipokinase

phosphokinase C

phosphodiesterase C

phospholipase C

lipokinase

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Cell Signalling and Transduction
Two key organizing principles for large multicellular organisms are

simple nerve reflexes and cell specialization

communication between cells and simple nerve reflexes

cell specialization and communication between cells

prokaryotic cell structure and cell specialization

simple nerve reflexes and cell specialization

communication between cells and simple nerve reflexes

cell specialization and communication between cells

prokaryotic cell structure and cell specialization

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Cell Signalling and Transduction

Cell Signalling and Transduction Self-phosphorylation is an excellent mechanism for triggering specific catalytic function of the proteins involved in signal cascades because it

Cell Signalling and Transduction Nitroglycerin has long been administered to human patients suffering from chronic chest pain (angina). This medication works because it

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

Cell Signalling and Transduction The signaling molecules called steroid hormones

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 Two key organizing principles for large multicellular organisms are

Cell Signalling and Transduction
Self-phosphorylation is an excellent mechanism for triggering specific catalytic function of the proteins involved in signal cascades because it

Cell Signalling and Transduction
Nitroglycerin has long been administered to human patients suffering from chronic chest pain (angina). This medication works because it

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

Cell Signalling and Transduction
The signaling molecules called steroid hormones

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
Two key organizing principles for large multicellular organisms are