Question

Metabolite receptors bind to ___________________.

	A.	second messengers
	B.	DNA
	C.	GPCRs
	D.	Protein Kinase A
	E.	All of the above is true.

Animals store glucose in the form of glycogen because ___________________.

	A.	extra energy is released when glucose is stored in glycogen.
	B.	storing glucose in glycogen does not require any energy.
	C.	storing glucose in glycogen lowers the osmolarity of the cell.
	D.	storing glucose in glycogen increases the osmolarity of the cell.
	E.	freeing glucose from glycogen converts it into fructose.

Answer 1

Metabolite receptors bind to ___________________

Explainantion:

Metabolite Receptor are those receptors which canalters cellular activity upon binding of the ligands to them  and results in an increase or decrease in normal body processes depending on the location of the metabolite receptor binding site on the target cell and its chemical structure.

1.These can mediate changes directly by binding to intracellular hormone receptors and modulating gene transcription.e.g the primary receptors for sex hormones estradiol (an estrogen) and testosterone

2. Examples of binding to cell surface receptors and stimulating signaling pathways include G protein-coupled receptors, and receptor tyrosine kinases.

Thus Metabolite receptors can bind to all the options given.

Correct option: E

Animals store glucose in the form of glycogen because ___________________.

Explanation:

The reason that the glucose is converted to glycogen in the liver for the storage because it is osmotically more stable. As we know glucose is osmotically very active will exerts more osmotic pressure than a single glycogen molecule which is osmotically inactive. thus it cannot be stored in the cells of the animal body due to the high osmotic pressure which glucose exerts inside the cell, causing the entry of water in the cell by endosmosis.

Option C is correct.