converts energy in food to energy in ATP.

Formula for Cellular Respiration6O2 + C6H12O6 → 6CO2 + 6H2O + 36 ATP

Food and CaloriesThe food and drink that you consume provide

a source of energy for your cells. The energy is used to make ATP.

calorie – the amount of energy needed to raise one gram of water one degree Celsius.

Kilocalorie (on labels) – 1000 caloriesFood also provides the building blocks for

your cellular products (proteins, hormones, etc.)

An overview of Cellular RespirationCellular respiration can be aerobic (with oxygen),

or anaerobic, (without oxygen)Aerobic respiration has 3 main steps: 1. Glycolysis 2. Krebs Cycle 3. Electron Transport Chain

Structure of MitochondriaA mitochondria’s structure is key to its role in cellular respiration.

An envelope of two membranes encloses the mitochondria and there is a space between the outer and inner membranes.

Structure of a mitochondria continued…Inner Matrix-encloses a think fluid called the MATRIX

The complex folding pattern of this membrane allows for many sites where reactions can occur.

A Road Map for Cellular RespirationA cell’s chemical processes make up a cell’s METABOLISM

Pathways-Anabolic and Catabolic

3 main stages

Stage 1: GlycolysisMeans splitting of sugarBreaks down a glucose moleculeTAKES PLACE: outside the mitochondria in the cytoplasm of the cell

ATP Molecules produced: 4 made-2 used (net gain of 2)

Stage 2: Krebs Cycle Finishes the breakdown of pyruvic acid molecules to carbon dioxide, releasing more energy in the process

TAKES PLACE: In the matrix within the mitochondria

ATP molecules produced: 2 ATP molecules

Stage 3: Electron Transport Chain and ATP Synthase ActionTAKES PLACE: In the inner membrane of the mitochondria

ATP molecules produced: 32 ATP molecules