Photosynthesis

strikes back!

Important Terms to Know… Producer – makes their own food from light energy and inorganic materials. Consumer – AUTOTROPH HETEROTROPH I wonder if anyone remembers the two types of Autotrophs?

Examples of Autotrophs: Auto = “self” Troph = “nutrition”Auto = “self” Troph = “nutrition” Green plants Algae photosynthetic protists Euglena Do Autotrophs undergo cellular respiration too? Yes, yes! Now stop hitting me!!

PHOTOSYNTHESIS Nearly all of the energy that powers LIFE on Earth originally comes from the ____. SUN

What IS Photosynthesis? The process to synthesize ___________ (the energy in an organic molecule) from _____ and, ( molecules) using energy glucose water CO 2 light chemical inorganic

Modes of Nutrition… ____________ must get their food by consuming autotrophs or other heterotrophs. BOTH autotrophs and heterotrophs must break down food into a usable form of energy called ______ Heterotrophs ATP

The Mighty Leaf where all this excitement occurs!! Woo Hoo!! 1.______________ 2._______________ 3._____________ 4._____________ 8._______________ 5._______________ 6._____________ 7._______________ * The Vascular Bundle contains the Xylem and Phloem Cuticle (there is a lower cuticle too!) Upper Epidermis Spongy Layer Lower Epidermis Guard Cell Stomate Vascular Bundle Palisade Layer

Colors and Photosynthesis The sun’s energy reaches the Earth as different wavelengths of visible and non-visible light. ( we can only see a fraction of it!) Humans see light as color, Which is _________off of objects. reflected This t-shirt absorbs all colors except red, which we view because it is reflected. What color(s) does this plant absorb? What color(s) does it reflect?

Chlorophyll absorbs… It reflects … These colors are used the most in photosynthesis! Green Light! That is why plants look green to us! Red, Blue and Violet light!

Photosythesis in a nutshell… Photosynthesis is how plants produce _____ (glucose). Photosynthesis uses ___________ from the sun, _______________ gas and water to make high energy ________________. __________ gas is also produced as a waste product. light energy carbon dioxide carbohydrates Oxygen food

The Photosynthesis Equation..yippidy do da! H 2 O + CO 2 C 6 H O 2 water + Carbon Dioxide glucose + oxygen The equation is the opposite of ________________________!! Light Energy enzymes cellular respiration Light Energy enzymes

Photosynthetic pigments… ___________ is the pigment in green plants which captures light energy. It is found in _____________. Chlorophyll Chloroplasts

Where exactly does Photosynthesis take place?

Light-Dependent Reactions Just like Cellular Respiration, Photosynthesis has several steps! 1.Photolysis: O2O2 H+ NADPH 2 SUN H2OH2O 2. ADP/ATP: ADP P ATP

Dark Reactions CO 2 NADPH 2 ATP PGAL* enzymes Glucose

Factors Affecting the Rate of Photosythesis There are 3 main factors that influence the rate of photosynthesis (thus affecting the amount of glucose produced)! 2. Amount of water 1. Temperature 3. Intensity of sunlight