Question

How many ATP are used for every molecule of glucose in glycolysis?

(This question asks for the number of ATP that must first be used, not the net ATP).

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

Answer 1:Glycolysis is a first step in the process of breakdown of glucose to release energy and also pyruvate is formed during this process.  During glycolysis for every molecule of glucose, 2 ATP molecules are used while 4 ATP, 2 NADH, and 2 pyruvates are produced. The synthesized pyruvate then enters into citric acid cycke.

Answer 2: storing glucose in glycogen increases the osmolarity of the cell

osmolarity is defined as the number of particles of solute per liter of solution. When glycogen is added it increases the solute concentration hence increases the osmolarity of cell.