Krebs Cycle Practice AP

The Krebs Cycle happens in the...

• Inner mitochondrial membrane

• Cytoplasm

• Mitochondrial matrix

• Intermembrane space of the mitochondria

Tags

NGSS.HS-LS2-5

The Krebs Cycle is like a...

• party

• hammer

• donut

• Ferris wheel

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-5

Oxaloacetate, a ______-carbon molecule, reacts with 2-carbon acetyl-CoA in the first step of the Krebs Cycle.

• 6

• 8

• 4

• 2

At different points in the Krebs Cycle, CO2 is pulled off molecules. This is called...

• Decarbonization

• Decarboxylation

• Exhaling

• CO2 emission

Tags

NGSS.HS-LS2-3

Each step of the Krebs Cycle has this in common.

• CO₂ is let off.

• H₂O is put into each reaction.

• ATP is produced.

• An enzyme is used.

Tags

NGSS.HS-LS1-7

Where does the CO₂ that we breath out come from?

• From the O₂ that we breathe.

• It is let off during certain steps of the Krebs Cycle.

• It is synthesized during glycolysis.

• It is a side product of phosphorylation.

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

How many molecules of ATP are produced in one turn of the Krebs Cycle?

• 0

• 1

• 2

• 3

Tags

NGSS.HS-LS1-7

NAD+ and FAD+ are involved in certain steps in the Krebs Cycle. What do they do?

• They donate electrons.

• They pull hydrogens and electrons off.

• They donate hydrogens and electrons.

• They pull H₂O off.

Tags

NGSS.HS-LS1-7

In glycolysis, glucose is broken down into pyruvate, which then enters the Krebs Cycle. Which of the following is correct?

• 1 Pyruvate leads to 1 Krebs Cycle

• 2 Pyruvates leads to 1 Krebs Cycles

• 1 Glucose leads to 1 Krebs Cycle

• 2 Glucose leads to 3 Krebs Cycles

Tags

NGSS.HS-LS1-7

How many NADH are produced during the Krebs Cycle (not counting the conversion of pyruvate to acetyl)?

• 2 NADH

• 3 NADH

• 4 NADH

• 5 NADH

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3