Krebs Cycle Quiz

Where does the Krebs cycle take place in eukaryotes?

• Endoplasmic Reticulum

• Mitochondria

• Cytoplasm

• Nucleus

Tags

NGSS.HS-LS1-7

What is the first step in the Krebs cycle?

• Conversion of malate

• Isomerization of citrate

• Oxidation of pyruvate

• Formation of citrate

How many molecules of NADH are generated in each cycle of the Krebs cycle?

• Four

• One

• Two

• Three

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Which enzyme is responsible for the conversion of isocitrate into alpha ketoglutarate?

• Citrate synthase

• Alpha ketoglutarate dehydrogenase

• Isocitrate dehydrogenase

• Aconitase

What is the final product of the Krebs cycle?

• ATP

• NADH

• Oxaloacetate

• FADH2

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

How many molecules of GTP are generated in the Krebs cycle for each molecule of glucose?

• Three

• Two

• One

• Four

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

Which compound combines with acetyl-coa to form citrate?

• Succinate

• Isocitrate

• Oxygen

• Pyruvate

Tags

NGSS.HS-LS1-7

What is the main purpose of the Krebs cycle?

• DNA replication

• Energy generation

• Lipid synthesis

• Protein synthesis

Tags

NGSS.HS-LS1-7

Which enzyme is responsible for the conversion of succinate into fumarate?

• Isocitrate dehydrogenase

• Succinate dehydrogenase

• Malate dehydrogenase

• Citrate synthase

What is the total number of NADH and FADH2 generated for each molecule of glucose in the Krebs cycle?

• Ten NADH, four FADH2

• Eight NADH, three FADH2

• Four NADH, one FADH2

• Six NADH, two FADH2

Tags

NGSS.HS-LS1-7