Thursday January 22 nd 2015 QOD - Identify the following reactions: 1.C 6 H 12 O 6 + 6O 2  6CO 2 + 6H 2 O + ATP 2.C 6 H 12 O 6  CO 2 + ATP + Alcohol 1.6CO 2 + 6H 2 O  C 6 H 12 O 6 + 6O 2 1.C 6 H 12 O 6 + 6O 2  ATP + Lactic Acid

Reactants and Products Cellular Respiration Photosynthesis Lactic Acid Fermentation Alcohol Fermentation Where it occurs cytoplasm and mitochondria chloroplast in plant cells muscle cellsyeast cells Reactants glucose and oxygen carbon dioxide and water glucose Products carbon dioxide, water and ATP glucose and oxygen lactic acid and ATP alcohol, carbon dioxide and ATP

Cellular Respiration Why is this process important to us as humans? Produces the energy for living organisms to perform all necessary functions to maintain life.

Cellular respiration occurs in two phases Cytoplasm – called glycolysis – Glucose splits into two 3 carbon molecules – A small amount of ATP is produced Mitochondria – Glucose is completely broken down – A large amount of ATP is produced – This step requires oxygen

Cellular Respiration

Fermentation An alternative way to break down glucose and produce ATP. Occurs when there is no oxygen present – Example is during exercise – Lactic acid buildup in muscles Produces less ATP than cellular respiration

Fermentation Alcohol Fermentation is when yeast breaks down glucose and produces alcohol and carbon dioxide – Beer and wine production – CO 2 helps bread rise

Photosynthesis Process by which a cell captures energy from sunlight and uses it to make food. Carbon dioxide + water + sunlight = sugar + oxygen

Photosynthesis Happens in the chloroplast of plant cells

Why are plants green? Because of a pigment called chlorophyll Chlorophyll is the green pigment helps to capture the suns light. Chlorophyll absorbs all colors except green which is reflected.