AIM: Why is photosynthesis one of the most important chemical reaction in the planet?

Photosynthesis: a chemical reaction in which light energy is converted to chemical energy in the form of glucose

It is the means by which the energy in sunlight becomes usable to living things.

  • Produces glucose (sugar), which provides the basis for most food chains
  • Produces Oxygen, which is important if you arean aerobic organism that requires oxygen for survival.

Photosynthesis is on the cellular level it occurs in organelles called chloroplasts. Inside the membranes is where chlorophyll and other light absorbing pigments are found.

Chemical equation:

CO2 + H2O + light energy ---> C6H12O6 + O2

Word Equation:

Carbon dioxide plus water plus sunlight produces glucose & oxygen

How are leaves adapted to carry out photosynthesis ?

Most Photosynthesis in plants occurs in the leaves.-they are thin and flat and provide the maximum surface area for the absorption of light.

What happens to the products of photosynthesis?

What is Cellular Respiration?

Cellular Respiration: A series of enzyme-controlled reactions in which the energy stored in glucose is transferred to the high energy molecule "ATP"

It takes place in the Mitochondria.

Glucose + oxygen Carbon dioxide + water + Enegy (ATP)

C6H12O6 + O2 CO2 + H2O + ATP

Cellular Respiration

  1. Aerobic Respiration (most organisms)

Glucose + oxygen Carbon dioxide + water + Enegy (ATP)

  1. Anaerobic Respiration (Fermentation): (Yeast, some bacteria and tired muscles cells)

2 types:

  1. Alcoholic Fermentation (yeast)

Glucose Carbon dioxide +alcohol + energy

  1. Lactic Acid (Fermentaion): Tired muscles cells

Glucose Carbon dioxide +lactic acid + energy

Aerobic Anaerobic

Oxygen used / Yes / NO
Where does it occurs? / Mitochondria / cytoplasm
Alcohol produced / NO / Yes
Lactic Acid produced / NO / Yes
Carbon dioxide produced? / Yes / Yes

Review:

What do cells use ATP for?

What is the word equation for aerobic cellular respiration?

How is fermentation different than aerobic respiration?

How can fermentation be used in business?