Chapter 9: Cellular Respiration

Question 1

Cellular respiration

Answer 1

set of metabolic reactions, takes place in the mitochondria, converts glucose (nutrients) to ATP

Question 2

Aerobic respiration

Answer 2

occurs in the presence if oxygen

Question 3

Anaerobic respiration (fermentation)

Answer 3

takes place when no air is present, produces lactic acid and alcohol

Question 4

Step 1: Glycolysis

Answer 4

occurs in the cytoplasm (out of the mitochondria), breaks down glucose with an enzyme called pyruvate kinase, releases 2 ATP

Question 5

Reshuffling of carbon before Krebs

Answer 5

glucose-> 2 pyruvate(3 carbon)-> 2 Acetyl CoA(2 carbon), extra carbon is waste

Question 6

Step 2: Krebs cycle

Answer 6

occurs in the matrix, FADH2 (another carrier) and NADH are created, net yiwld of 2 ATP, net yield of 6 NADH and 2 FADH2-> sent to ETC, oxidation of glucose produces CO2

Question 7

Step 3: Electron Transport System

Answer 7

consists a series of enzymes on the inner mitochondrial membrane (cristae), electrons are released from NADH and FADH2 passing along these enzymes giving up energy used to processes chemiosmosis<- drives ATP synthase<- makes ADP into ATP (38 ATP total)