Which one of the following is not a secondary | vedclass

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(D) The correct answer is $D$. Secondary messengers are low-molecular-weight,diffusible molecules used to relay signals within a cell. They are synthe

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Sodium

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(D) The correct answer is $D$. Secondary messengers are low-molecular-weight,diffusible molecules used to relay signals within a cell. They are synthesized or released by specific enzymatic reactions,usually as a result of an external signal received by a transmembrane receptor. $cAMP$,$cGMP$,and $Ca^{2+}$ act as secondary messengers and are located within the cytoplasm. Sodium $(Na^+)$ is an essential mineral ion involved in maintaining membrane potential and nerve impulse conduction,but it does not function as a secondary messenger in hormone signaling pathways.

Column $I$	Column $II$
$(a)$ Pituitary hormone	$(i)$ Steroid
$(b)$ Epinephrine	$(ii)$ Neuropeptides
$(c)$ Endorphins	$(iii)$ Peptides,proteins
$(d)$ Cortisol	$(iv)$ Biogenic amines

Which one of the following is not a secondary messenger in hormone action?

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Match the following columns and select the correct option.
Column $I$ Column $II$
$(a)$ Pituitary hormone $(i)$ Steroid
$(b)$ Epinephrine $(ii)$ Neuropeptides
$(c)$ Endorphins $(iii)$ Peptides,proteins
$(d)$ Cortisol $(iv)$ Biogenic amines

"Secondary messenger" is

What does the given diagram of enzyme action represent?

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