ATP Synthesis

Question 1

What is chemiosmosis?

Answer 1

-diffusion of protons from a region of high conc to a region of low conc through a partially permeable membrane

Question 2

How is attachment of ATP formed?

Answer 2

-movement down conc grad releases energy
-attaches ADP + P = ATP

Question 3

What are the 2 ways electrons are raised to higher energy levels?

Answer 3

1. electrons present in pigment molecules are excited when absorbing light
2. when chemical bonds are broken in respiratory substrate molecules

Question 4

What is the transport chain?

Answer 4

-energy is released as electrons move down carriers
-used to pump protons across a membrane

Question 5

How can protons move back through a membrane?

Answer 5

-ATP synthase
-flow of protons through channels provides energy to synthesise ATP