Mitochondria

Question 1

Shape of the mitochondria

Answer 1

-cylindrical

Question 2

How many membranes does a mitochondria have?

Answer 2

• it has two membranes

Question 3

What are the two membranes in a mitochondria separated by?

Answer 3

-narrow, fluid-filled inter-membrane space

Question 4

What is the inner membrane in the mitochondria folded into?

Answer 4

-cristae

Question 5

Matrix

Answer 5

-solution containing many compounds: lipids and proteins

Question 6

They contain ribosomes of what size and what are they for?

Answer 6

-70s
-allows protein synthesis

Question 7

Function of mitochondria

Answer 7

-produce ATP in aerobic respiration
-some reactions happen in the matrix and on inner membrane

Question 8

What does the cristae provide?

Answer 8

-large SA for attachment of enzymes involved in respiration

Question 9

What cells need a large supply of mitochondrion cells?

Answer 9

-muscle cells because of the high metabolic activity

Question 10

Advantage of mitochondria being cylindric are

Answer 10

-larger SA than sphere of the same volume
-reduces diffusion distance between the edge and centre making respiration more efficient