PhotosynthesisEnergy from sunlight….food and air for us

Photosynthesis is cellular respiration in reverse for

plants In animals, we use GLUCOSE and OXYGEN to create

energy. The mitochondria (power plant) converts these into

cellular electricity ATP!

In animals, the waste products produced are CO2 and H20 PHOTOSYNTHESIS is the exact opposite!!!!!!!!

Let’s think some more about this…

What does a plant need?

SUNLIGHT (or….grow light) Water And…CO2 (what plants breathe in)

So, plants use SUNLIGHT, WATER, and CO2 to create energy

ATP, just like in humans

What do plants produce as waste

products? Hint: Plants make just what humans need

for cellular respiration

Remember, humans need Oxygen and GLUCOSE...

And, that is exactly what plants produce as waste after they’ve made their ATP!

Plants produce OXYGEN and GLUCOSE (as fruit, or in their bodies for us to eat!)

Finally, HYDROLYSIS Hydro = water Lysis = splitting Hydrolysis = water splitting Just like cellular respiration involves

GLYCOLYSIS (sugar splitting) as the first step of the process, the first step of photosynthesis is to split WATER into parts.

So, Cell Respiration and Photosynthesis work

together Plants:

Sunlight + CO2 + H20 ENERGY (ATP) + Glucose + O2

Animals: O2 + Glucose ENERGY (ATP) + CO2 + H2O

Plants waste products are our FOOD and AIR (O2) Our waste products are plants’ WATER and AIR (CO2)

ATPCO2 and

H2O

Glucose

Chloroplast Mitochondria

O2

How do plants capture energy from the sun?They must contain:

Chlorophyll – a green pigmentthat can capture light energy

Chlorophyll is found in the chloroplasts, organelles in plant cells

Chloroplast – organelle in green plant

cells