The photosynthesis equation Write the chemical equation for
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The photosynthesis equation Write the chemical equation for photosynthesis in words… Then write the equation again using molecular formulas… Then balance the chemical equation using coefficients… Word Bank: Sunlight Water Glucose Carbon dioxide Oxygen
Photosynthesis: Plants use the energy of sunlight to convert water and carbon dioxide into high energy sugars and oxygen
II. Chemical Equations Chemical equations have two parts…. Reactants - The raw materials Products -What are made
II. Chemical Equations Atoms are rearranged to form new products
The photosynthesis equation: The Reactants: Carbon dioxide & Water The Products: Glucose and Oxygen
III. What do plants use sugars for? 1. Sugars meet the plants energy needs 2. Builds complex carbohydrates (cellulose) for growth
V. How do plants capture the energy of sunlight? What is sunlight made of? “white light” is made of Different wavelengths of light
How do plant capture the energy of sunlight? Plants use light-absorbing molecules called pigments to absorb sunlight. A plants main pigment is called chlorophyll
Concept Check: What does chlorophyll do for plants? Absorb light-energy.
Which two colors do the chlorophyll molecules absorb most? Blue/violet 2. Red Absorption 1.
What color is not absorbed? Absorption 1. Green
What happens to the color not absorbed by the plant?
Green light is reflected back to your eyes
N I N A Y C CAR O H OTE T N N OID A S CHLOROPHYLL A CHLOROPHYLL B XAN THO PHY LL
VII. Where does lightabsorption occur? Plant Cells Chloroplast
VII. Chloroplast Structure Chloroplasts have a double-membrane Chlorophyll pigments are found in chloroplasts
A Musical Summary http: //www. youtube. com/watch? v=C 1_uez 5 WX 1 o
Limiting Factors Brainstorm as many factors as you can that limits how many touchdowns a quarter back can throw:
Limiting Factors A limiting factor limits how fast a reaction can happen In photosynthesis, a limiting factor would limit how fast products are made -glucose and oxygen
Limiting Factors of Photosynthesis Water -Water is necessary for photosynthesis -Less water can slow or stop photosynthesis 1.
Limiting Factors of Photosynthesis Water -What happens to grass during a drought? -How do desert plants attempt to reduce water loss? 1.
Limiting Factors of Photosynthesis 2. Temperature -Photosynthesis works best between 0 -35 degrees Celsius -Temperatures too high or low can slow or stop photosynthesis
Limiting Factors of Photosynthesis 3. Intensity of Light -High light intensity increases rate of photosynthesis -Low light intensity decreases rate of photosynthesis
Limiting Factors of Photosynthesis 3. Intensity of Light When (in the year) is the sunlight most intense in Missouri? When do the plants have the highest rate of photosynthesis?
Limiting Factors Summary The following factors can limit the rate of photosynthesis: 1. Water 2. Temperature 3. Light intensity
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