Pyruvate Oxidation and Krebs Cycle

How many carbon atoms does each pyruvate feed into the Krebs Cycle?

• 1
• 2
• 3
• 4

Considering only glycolysis and the conversion of pyruvate to acetyl CoA, how many NADH molecules will be produced from one glucose molecule?

• 1
• 2
• 3
• 4

For every molecule of glucose, how many molecules of FADH₂ are produced by the Krebs Cycle?

• 1
• 2
• 4
• 6

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

The ETC makes water.  To make this water, where do the hydrogen atoms come from?

• glucose
• pyruvate
• NADH and FADH₂
• oxygen

Tags

NGSS.HS-LS1-7

NAD and FAD are _________ in the Krebs cycle.

• oxidized
• reduced
• carboxylated
• phosphorylated

Which statement best describes the link reaction?

• Pyruvate is carboxylated; acetyl co-A is formed, reducing NAD+
• Pyruvate is decarboxylated; acetyl co-A is formed, oxidizing NADH
• Pyruvate reacts with co-A, oxidizing NADH
• Pyruvate is decarboxylated; acetyl co-A is formed, reducing NAD+

Which process is most closely associated with mitochondrial membranes?

• glycolysis
• Krebs cycle
• fermentation
• oxidative phosphorylation

Where is the krebs cycle located?

• Outer mitochondria membrane
• Matrix
• Cytoplasm
• Inner membrane

The number of ATP molecules produced out of Krebs Cycle is:

• 2
• 3
• 4
• 0

Tags

NGSS.HS-LS1-7

How many NADH molecules are produced by a molecule of glucose through the Krebs' Cycle?

• 2
• 3
• 4
• 6

Tags

NGSS.HS-LS1-7