Oxidative Phosphorylation

Where, precisely, does oxidative phosphorylation occur in the cell?

• cytoplasm

• mitochondrial matrix

• cell membrane

• cristae of mitochondria

What happens to NADH and FADH₂ at the start of oxidative phosphorylation?

• They are phosphorylated

• They are oxidised

• They are decarboxylated

• They are reduced

Tags

NGSS.HS-LS1-7

What is released from the electron transport chain as electrons flow through it?

• energy

• oxygen

• NADH

• ATP

Tags

NGSS.HS-LS1-7

Where does the energy used to pump protons (H⁺) through carrier proteins in the mitochondrial membrane come from?

• ATP

• electrons

• NADH

• FADH₂

Tags

NGSS.HS-LS1-7

Where does the energy used to pump protons (H⁺) through ATP synthase in the mitochondrial membrane come from?

• ATP

• electrons

• the proton (H⁺) gradient

• NADH

Tags

NGSS.HS-LS1-7

Where is ATP synthase found in a mitochondrion?

• the intermembrane space

• the matrix

• the inner membrane

• the outer membrane

By what method of transport do protons (H+) flow through ATP synthase?

• active transport

• diffusion

• endocytosis

• osmosis

What reaction is catalysed by ATP synthase?

• ATP --> ADP + Pi

• ATP + Pi --> ADP

• ADP + Pi --> ATP

• ADP --> ATP + Pi

Tags

NGSS.HS-LS1-7

In which direction are protons (H⁺) pumped through carrier proteins in the inner mitochondrial membrane?

• From matrix to intermembrane space

• From matrix to cytoplasm

• From intermembrane space to matrix

• From intermembrane space to cytoplasm

In which direction are protons (H⁺) pumped through ATP synthase?

• From matrix to intermembrane space

• From matrix to cytoplasm

• From intermembrane space to matrix

• From intermembrane space to cytoplasm