Photosynthesis Biology.

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Presentation transcript:

Photosynthesis Biology

What is photosynthesis? Process plants use to make their own food Plants’ leaves contain chlorophyll Chlorophyll (green color) makes photosynthesis happen (these were the green dots you observed in lab under the microscope)

Chemical Process Autotrophic Process: Plants and plant-like organisms make their energy (glucose) from sunlight. Stored as carbohydrate in their bodies. 6CO2 + 6H2O + sunlight  C6H12O6 + 6O2 You will need to memorize this formula!!!!!

Why is Photosynthesis Important? Makes organic molecules (glucose) out of inorganic materials (carbon dioxide and water). It begins all food chains/webs. Thus all life is supported by this process. It also makes oxygen gas!!

Photosynthesis-starts the ecological food webs!

Photosynthesis means "putting together with light." Plants use sunlight to turn water and carbon dioxide into glucose. Glucose is a kind of sugar. Plants use glucose as food for energy and as a building block for growing. Autotrophs make glucose and heterotrophs are consumers of it

Plant leaves have many types of cells!

Plant Cells

Chloroplasts make the sugars!

Leaves are green because they contain Plants Leaves are green because they contain the pigment: chlorophyll Leaves have a large surface area to absorb as much light as possible "Thanks for the Glucose!"

Chloroplasts make the oxygen too!

Stoma This opening how plants exchange gases. Check it Stoma This opening how plants exchange gases! Check it! Can you name the two important gases that go in and out of the leaves? Why are the stomata located on the underside of leaves?

PHOTOSYNTHESIS Absorbing Light Energy to make chemical energy: glucose! Pigments: Absorb different colors of white light (ROY G BIV) Main pigment: Chlorophyll a Accessory pigments: Chlorophyll b and Carotenoids These pigments absorb all wavelengths (light) BUT green!

PHOTOSYNTHESIS Why do we see green? Green color from white light reflected NOT absorbed Chloroplast: organelle responsible for photosynthesis Chlorophyll: located within Chloroplast Green pigment

Visible light is only a small part of the electromagnetic spectrum (all forms of light).

Chemical Process of Photosynthesis

Video on Photosynthesis http://www.bing.com/videos/search?q=Video+on+Photosynthesis&FORM=HDRSC3#view=detail&mid=A355A202FEC3949A8982A355A202FEC3949A8982 Song http://www.bing.com/videos/search?q=Video+on+Photosynthesis&FORM=HDRSC3#view=detail&mid=2119F42FA5A1D7B2E1522119F42FA5A1D7B2E152