REVIEWWhere do the light dependent

reactions occur?

What are the product of the light independent reactions

What is the purpose of chlorophyll?

Write the photosynthesis equation

All living organisms need Energy!Autotrophs get energy from

sunlightHeterotrophs get energy from

organic compounds

The ULTIMATE source of energy for plants and animals is the

Sun!

Enzymes

CELLULAR RESPIRATION EQUATION

The Organelle of Cellular RespirationCellular respiration takes place in

both Plant and animal cells. The organelle in which it takes

place is the Mitochondria – This is also known as the ‘power-house’ of the cell.

Stages of Cellular Respiration

Glycolysis◦After Glycolysis….◦If oxygen present: Cellular Respiration

◦If oxygen not present: Fermentation

C6H12O6 + 6O2 --- 6CO2+ 6H2O + energy

1st Stage

GlycolysisThe cells of most organisms

transfer energy found in organic compounds, such as those in foods, to ATP.

The primary fuel for cellular respiration is glucose Fats can also be broken down to produce ATP

REVIEWWhere does cellular respiration

take place?

What are the reactants and products of cellular respiration. ◦2 reactants◦3 products

Step #1: GlycolysisGlucose is split into 2

pyruvates to make ATPTake place in the

cytoplasm of the cellUses some atp to do thisDoes not need oxygen-

anaerobic

Step 2 Krebs CycleAerobic – must

use oxygen

Pyruvate made during glycolysis combines with oxygen and releases carbon dioxide

2 atp is produced

Step 3 Electron Transport ChainElectron Transport ChainThe second stage of aerobic

respiration takes place in the inner membranes of mitochondria

Anaerobic Respiration

Two forms of anaerobic respiration are:◦Lactic Acid fermentation◦Alcoholic Fermentation

Fermentation

The process in which Carbohydrates are broken down in the absence of oxygen is called fermentation.

Fermentation enables glycolysis to continue supplying a cell with ATP in anaerobic conditions.

FermentationIn lactic acid fermentation, pyruvate is

converted to lactic acid.

During vigorous exercise, lactic acid fermentation also occurs in the muscles of animals, including humans.This occurs when not enough oxygen is available

During alcoholic fermentation, pyruvate from glycolysis is converted into ethanol and carbon dioxide◦ Used for making beer, wine , bread

Cellular Respiration/Photosynthesis