cellular respiration

Question 1

what is the energy carrier

Answer 1

ATP (adenosine triphosphate)

Question 2

what are the major energy requirements for a cell?

Answer 2

mechanical wor (motor proteins)
making new materials (growth and replacement)
transport (molecules across membrane)
maintaining order in and out of cell

Question 3

where does glycolysis (stage 1), and pyruvate oxidation and citric acid cycle (stage 2) occur?

Answer 3

in the mitochondrial matrix

Question 4

where does oxidative phosphorylation (stage 3) occur

Answer 4

inner membrane of the mitochondrion called the cristae

Question 5

what process converts glucose into 2NADH (high energy electron carrier) and 2 ATP(energy stroage molecule)?

Answer 5

Glycolysis, stage 1 of cellular respiration

Question 6

what process converts 2 pyruvate molecules into 2 acetyl CoA molecules to enter the citric acid cycle?

Answer 6

Pyruvate oxidation, this also creates 2CO2

Question 7

what are the outputs of the citric acid cycle which completely breaks down glucose?

Answer 7

energy carrying ATP, 5NADH, 2 FADH2 + 4CO2 + 6H2O

Question 8

what are the two areas that cellular respiration occurs on the inner membrane of the mitochondrion?

Answer 8

electron transport chain - electrons from NADH and FADH2

Chemiosmosis - ATP production

Question 9

what are the names of the four protein complexes on the cristae?

Answer 9

proteins 1, 2 , 3 , 4

Question 10

what are the functions of the 4 protein complexes?

Answer 10

NADH and FADH2 shuttle high energy eletrons into the complex, they move through the chain, protons (H+) are pumped across membrane creating a proton gradient.

Question 11

why is the accumulation of protons in the intermembrane space a crucial part of cellular respiration

Answer 11

protons move down gradient from high to low through ATP synthase, creating more ATP from ADP + Pi