AP Biology Unit 3 Glycolysis

Where does glycolysis take place?

• Cytosol

• Mitochondrial matrix

• Mitochondrial cristae

• Thylakoid

Glycolysis requires oxygen.

• True

• False

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What is the starting material for glycolysis?

• Pyruvate

• Acetyl CoA

• Glucose

• G3P

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What is the main function of glycolysis?

• To rearrange the glucose molecule to be broken down

• To split the glucose molecule to release energy

• To recreate acetyl CoA for the Krebs cycle

• To absorb and store energy in ATP molecules

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What process takes place if NADH is unable to be oxidized?

• Krebs cycle

• Electron transport chain

• Chemiosmosis

• Fermentation

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There are 10 steps in glycolysis, how many enzymes catalyze these steps?

• 8

• 9

• 10

• 11

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What are the products of glycolysis?

• 2 ATP, 2 NADPH, 2 pyruvate

• 2 ADP, 2 NADH, 2 pyruvate

• 2 ATP, 2 NADH, 2 pyruvate

• 2 ADP, 2 NADPH, 2 pyruvate

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How does glycolysis lead to ATP synthesis?

• Glucose provides the phosphate for ADP to synthesize ATP

• Glycolysis splits the glucose molecule to create G3P

• High energy electrons are stored in NADH for the ETC

• Acetyl CoA is synthesized for the Krebs cycle

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Justify that glycolysis evolved before oxygen was present in the atmosphere.

• Glycolysis does not require oxygen which represents that it evolved prior to free oxygen in the atmosphere

• Glycolysis does not take place in the mitochondria and thus does not require oxygen

• Glycolysis splits a glucose molecule into 2 pyruvate molecules which does not require oxygen

• Glycolysis takes place in all living organisms which means it evolved prior to free oxygen in the atmosphere

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Justify that glycolysis evolved prior to the mitochondria.

• Glycolysis takes place in the cytosol

• Glycolysis does not require a membrane which represents that it evolved prior to membrane bound organelles

• Glycolysis has instructions in the nuclear DNA

• Glycolysis does not require mitochondrial DNA which represents that it evolved prior to membrane bound organelles

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