At which step, glycolysis reaches the break-even point: 2
molecules of ATP consumed, and 2 new molecules synthesized?

1.	Splitting of fructose-6-phosphate into two trioses
2.	Conversion of 1,3 bi-phosphoglycerate to 3 phosphoglycerate
3.	Conversion of GADP to 1,3 biphosphoglycerate
4.	Conversion of DHAP to GADP

Under which condition would you expect the mitochondrial proton gradient to be highest and therefore ATP synthesis to proceed?
1. pyruvate (present)-oxygen (present)-ATP levels (high)
2. pyruvate (present)-oxygen (present)-ATP levels (low)
3. pyruvate (present)-oxygen (absent)-ATP levels (high)
4. pyruvate (absent)-oxygen (present)-ATP levels (low)

Plants can get along without respiratory organs because of the following except:

Sucrose is converted into glucose and fructose by the enzyme:

1. Maltase
2. Zymase
3. Isomerase
4. Invertase

The maximum concentration of alcohol in beverages that are naturally fermented is:
1. 5 - 10%
2. 10 - 15%
3. 20 - 25%
4. 45 - 50%

The co-factor required for the activity of pyruvate dehydrogenase is:
1. Zinc
2. Magnesium
3. Manganese
4. Copper

In the mitochondrial electron transport system, the term Complex III refers to:
1. NADH dehydrogenase
2. Cytochrome c
3. FADH₂
4. Cytochrome bc₁ complex

For each ATP produced, how many H passes through F₀ from the intermembrane space to the matrix down the electrochemical proton gradient?

1. 1
2. 2
3. 3
4. 4

If fatty acids were to be respired, they would first be degraded to:
1. Glucose-6 phosphate
2. Pyruvate
3. Acetyl-CoA
4. Alpha ketoglutarate

In the absence of oxygen, the primary purpose of fermentation is to: