Topic 11 - Energy from (electro)chemical gradients I

Question 1

Roles of compartments:

Answer 1

1. Cell membrane: keep stuff outside the cell
2. Segregation of incompatible biological processes
3. Providing specialised microenvironments
4. Facilitating formation of gradients of concentration/electrical charge

Question 2

What energy do mitochondria use? Solar or Redox?

Answer 2

Redox

Question 3

What energy do chloroplasts use? Solar or Redox?

Answer 3

Solar

Question 4

What energy do bacteria use? Solar or Redox?

Answer 4

Both

Question 5

What is the site of ATP synthesis in bacteria and mitochondria?

Answer 5

The inner compartment -> matric/cytoplasm

Question 6

What is the site of ATP synthesis in chloroplasts?

Answer 6

The outer compartment -> stroma

Question 7

In ΔG(in-out), from where to where does the substance move?

Answer 7

It is the energy to move 1 mole of substance from the outside to the inside

Question 8

What are the two parts of the Proton Motive Force?

Answer 8

pH gradient and electrochemical gradient

Question 9

Give an example of an ion gradient with only a pH component

Answer 9

Mitochondrial H+/Na+ antiporter

Question 10

Give an example of an ion gradient with only an electrical component

Answer 10

Calcium transport