Cellular Respiration Review

Which of the following are products of pyruvate oxidation?

• Acetyl CoA, O2 and ATP

• Acetyl CoA and ADP

• Acetyl CoA, CO2 and NADH

• Acetyl CoA, NAD+ and ATP

In the ETC, the final electron acceptor is?

• H2O

• O2

• CO2

• NAD+

The ETC pumps H+ ions into which location of the mitochondria?

• Mitochondrial matrix

• Intermembrane space

• Inner membrane

• H+ are pumped out of the mitochondria

Which of the following accurately describes a function of fermentation?

• To cause the production of ethanol in muscle cells

• To increase energy production under aerobic conditions

• To reduce NAD+ to NADH

• To oxidize NADH to NAD+

For each molecule of glucose metabolized, the citric acid cycle produces:

• 6 NADH and 2 FADH2

• 3 NADH and 1 FADH2

• 38 ATP molecules

• 34 ATP molecules

How many net ATP are made if fructose-1,6-bisphosphate is put through glycolysis?

• 2 ATP

• 1 ATP

• 4 ATP

• 6 ATP

How does the cell generate the required energy to synthesize ATP from the electron transport chain?

• ATP formed during glycolysis is used to drive ATP synthesis by the enzyme ATP synthase

• Energy is captured as electrons travel down the electron transport chain, providing enough energy to synthesize ATP

• Protons are pumped into the intermembrane space as electrons travel down the electron transport chain, creating an electrochemical gradient used to drive ATP synthesis

• None of the above

A solution in a beaker contains all of the enzymes necessary for undergoing glycolysis. A mole of glucose is mixed into the solution. No oxygen is present and no ATP is present. Does glycolysis occur?

• Yes because glycolysis can occur in the absence of oxygen

• No because glycolysis require oxygen to occur

• Yes because glycolysis produces ATP

• No because ATP is not present

Starting with one molecule of glucose, glycolysis results in the net production of:

• 2 NAD+, 2 pyruvate, 2 ATP

• 2 NADH, 2 pyruvate, 2 ATP

• 4 NADH, 2 pyruvate, 4 ATP

• 2 CO2, 2 pyruvate, 2 ATP

What product of the Krebs cycle is also used as a reactant in the Krebs cycle?

• citrate

• ATP

• Acetyl CoA

• Oxaloacetate