Glycolysis

The overall goal of glycolysis, the Krebs cycle, and the electron transport system is the formation of:

1. ATP in small stepwise units.

2. ATP in one large oxidation reaction

3. Sugars

4. Nucleic acids

Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalyzed by:

1.	Phosphofructokinase	2.	Aldolase
3.	Hexokinase	4.	Enolase

What is the net gain of ATP when each molecule of glucose is converted to two molecules of pyruvic acid?

1.	Eight	2.	Four
3.	Six	4.	Two

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R):

Assertion (A):	ATP is used at two steps in glycolysis.
Reason (R):	First ATP is used in converting glucose into glucose-6-phosphate and second ATP is used in conversion of fructose-6-phosphate into fructose-1-6-diphosphate.

In the light of the above statements, choose the correct answer from the options given below :

1.	(A) is False but (R) is True.
2.	Both (A) and (R) are True and (R) is the correct explanation of (A).
3.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
4.	(A) is True but (R) is False.

Match List-I with List-II:

	List-I		List-II
A.	Citric acid cycle	I.	Cytoplasm
B.	Glycolysis	II.	Mitochondrial matrix
C.	Electron transport system	III.	Intermembrane space of mitochondria
D.	Proton gradient	IV.	Inner mitochondrial membrane

Choose the correct answer from the option given below:
1. A-II, B-I, C-IV, D-III
2. A-III, B-IV, C-I, D-II
3. A-IV, B-III, C-II, D-I
4. A-I, B-II, C-III, D-IV