Cell Respiration Prep Session

Which process does NOT require oxygen?

• glycolysis

• oxidative phosphorylation

• Krebs cycle

• aerobic respiration

NADH and FADH2 are made during the first three steps for use in oxidative phosphorylation. What is their purpose in this step?

• to carry and donate carbon atoms

• to create water

• to accept electrons from the electron transport chain

• to donate electrons to the electron transport chain

In which step of cellular respiration is oxygen a reactant?

• Glycolysis

• Link reaction

• Kreb's cycle

• Electron transport chain

In which step of cellular respiration is glucose a reactant?

• glycolysis

• link reaction

• Kreb's cycle

• Electron transport chain

According to the chemiosmotic theory, the energy required to move protons from the mitochondrial matrix to the intermembrane space against a concentration gradient comes most directly from

• the hydrolysis of ATP

• the breakdown of high-energy fatty acids in the mitochondrial matrix

• electrons flowing along the electron transport chain

• substrate-level phosphorylation

During respiration, most ATP is formed as a direct result of the net movement of

• potassium against a concentration gradient

• protons down a concentration gradient

• electrons against a concentration gradient

• electrons through a channel

In which step of cellular respiration produces the most ATP?

• Glycolysis

• Link reaction

• Kreb's cycle

• Oxidative phosphorylation

Which step of cellular respiration does NOT occur in the mitochondria?

• Glycolysis

• Link reaction

• Kreb's cycle

• Electron transport chain

Which of the four steps occurs in all organisms (prokaryotes and eukaryotes) in aerobic and anaerobic conditions?

• glycolysis

• oxidative phosphorylation

• Krebs cycle

• link reaction