Lesson 1 : Mitochondrial Structure

Question 1

Describe the membrane of the mitochondria

Answer 1

Double membrane

Inner membrane folded to form cristae

Question 2

What is the name of the fluid inside the mitochondria?

Answer 2

Matrix

Question 3

How is the inner membrane adapted for respiration ?

Answer 3

Highly folded to increase surface area for ATP production. Lots of membrane bound electron carrier proteins and ATP synthase enzymes for generating ATP

Question 4

The membrane contains proteins for the ETC. What is an ETC?

Answer 4

A series of membrane bound proteins that can transfer electrons between them

Question 5

Oxidative phosphorylation in mitochondria is similar to photo phosphorylation in chloroplasts. these processes are involved in the formation of what compound?

Answer 5

ATP

Question 6

What is the name given of the enzyme that is involved in synthesising this compound?

Answer 6

ATP synthase

Question 7

Chemiosmosis depends on the creation of proton concentration gradients. What subatomic particles provides the energy to maintain this gradient ?

Answer 7

H+ ions

Question 8

What cells contain the most mitochondria? Give an example and explain.

Answer 8

Cells which require large amounts of ATP e.g. muscle cells (for movement), sperm cells (for movement), root hair cells ( for active transport), Epithelial cells of small intestine ( for active transport )

Question 9

Where do most of the stages of respiration take place in the cell?

Answer 9

Mitochondria

Question 10

What are the stages of respiration

Answer 10

1- glycolysis
2- link reaction
3- Krebs cycle
4- Electron Transport Chain

Question 11

What 2 reactions take place in the matrix ?

Answer 11

The link reaction

Krebs Cycle