Chemical Pathways

Cellular Respiration

• Cellular respiration is the process that releases ___________ by breaking down glucose and other food molecules in the presence of oxygen.

• Both ___________ and ____________ cells use cellular respiration to release energy.

Cellular Respiration Equation

•The equation for cellular respiration is:

•_____+ _____ → _____ + _____ + _____ •oxygen + glucose → carbon dioxide + water + Energy

2 Stages of Cellular Respiration

• Stage I: __________ – Takes place in the cytoplasm

–Breaks down glucose into pyruvic acid (+2 ATP)

Stage 2: __________ (With Oxygen)– Aerobic– In Mitochondria– Goes through the Kreb’s Cycle (+2 ATP)– Goes through Electron Transport Chain (up to

+34 ATP)

ORStage 2: _____________ (Without Oxygen)

– Anaerobic– In Cytoplasm– Two Types: Lactic Acid or Alcohol

2 Stages of Cellular Respiration

Overview of Cellular Respiration

Cytoplasm

Pyruvicacid

Mitochondrion

Electrons carried in NADH

Electrons carried in NADH and FADH2

Glucose Glycolysis