Unit Two- The mitochondria

Question 1

describe the inner membrane

Answer 1

-folded into cristae to increase surface area
-rich in proteins
-impermeable to most small ions
-proton pump

Question 2

describe the outer membrane

Answer 2

-freely permeable
-contains enzymes that convert fatty acids to forms that can be metabolized

Question 3

Describe the Intermembrane

Answer 3

-fluid filled area between the two membranes
-contains ions and H+ ions
-serves as a hydrogen reserve for chemiosmosis

Question 4

Describe the matrix

Answer 4

-innermost area
-contains copies of DNA, ribosomes, and enzymes, necessary to express mitochondrial genes