IB Krebs Cycle

What is the role of oxaloacetate in the Krebs cycle?

• Initiating the cycle by combining with acetyl-CoA to form citrate

• Inhibiting the production of ATP in the cycle

• Breaking down citrate into oxaloacetate

• Combining with pyruvate to form acetyl-CoA

Tags

NGSS.HS-LS2-3

How many molecules of NADH are produced in one turn of the Krebs cycle?

• 5

• 1

• 3

• 10

Tags

NGSS.HS-LS1-7

What is the role of FAD+ in the Krebs cycle?

• oxidizing agent

• reducing agent

• accepts electrons

• donates electrons

Tags

NGSS.HS-LS1-7

How many molecules of FADH2 are produced in one turn of the Krebs cycle?

• 3

• 0

• 1

• 2

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

• 5

• 10

• 3

• 1

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Which molecule is made in the link reaction and needed to initiate the Kreb's cycle?

• oxaloacetate

• acetyl-CoA

• pyruvate

• citrate

Which process in the Krebs cycle directly produces ATP?

• Citric acid cycle

• oxidative decarboxylation

• Substrate-level phosphorylation

• Glycolysis

What is produced in the the Krebs cycle?

• NADH

• ATP

• FAD+

• Carbon dioxide

Tags

NGSS.HS-LS1-7

Where do the link reaction and Kreb's cycle take place?

• cytoplasm

• matrix

• intermembrane space

• thylakoid

What is the net gain of ATP molecules produced from one molecule of glucose in the Krebs cycle?

• 2

• 10

• 5

• 0

Tags

NGSS.HS-LS1-7