7

Question 1

The electron transport chain helps

Answer 1

the transfer of electrons from NADH and FADH2 to oxygen

Question 2

the four protein complexes of the electron transport chain

Answer 2

• complex 1- NADH dehydrogenase
• complex 2- succinate dehydrogenase
• complex 3- cytpchrome complex
• complex 4- cytochrome oxidase

Question 3

what shuttles electrons from complex 1 to complex 2 and 3 and electrons from complex 3 to 4

Answer 3

• ubiquinone

- cytochrome c

Question 4

oxidative phosphorylation

Answer 4

The mode of ATP synthesis that is linked to the oxidation of molecules by an electron transport chain

Question 5

multiprotein complex that spans the inner mitochondrial membrane

Answer 5

ATP synthase

Question 6

an enzyme early in glycolysis is

Answer 6

phosphofructokinase

Question 7

ATP is known as an allosteric inhibitor of phosphofructokinase because

Answer 7

if excess ATP is present in the cytosol it binds to phosphofructokinase, inhibiting its action

Question 8

After glycolysis, what if no oxygen is present what happens

Answer 8

the pyruvate remains in cytosol, where it is reduced and consumes the NADH by a series of reactions called fermentation

Question 9

two types of fermentation

Answer 9

• lactate - when movement of muscle cells calls for more oxygen that it cant provide, lactate happens
• alcohol - occurs in yeast to make things rise

Question 10

How do protein kinases function

Answer 10

They add phosphate groups to target proteins