photosynthesis & cellular respiration. characteristics of plant cells cell wall large vacuole...
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Photosynthesis & Cellular Respiration
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Characteristics of Plant Cells
• Cell wall• Large vacuole for water
storage• Contain Chloroplast (carry
out photosynthesis!)
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Characteristics of Plants
• Plants carry materials through veins known as vascular tissue. There are two types of vascular tissue:–Xylem: transports water–Phloem: transports sugars
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Characteristics of Plants• Roots: gather water and minerals
that the plant needs• Leaves: contain stomata, have a waxy
cuticle to prevent water loss, and carry out PHOTOSYNTHESIS!
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Leaf and Photosynthesis
• Palisade mesophyll is the site of most photosynthesis
• Stomata are found on the underside of the leaf
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Photosynthesis
• Know the equation for photosynthesis!
Carbon dioxide + water ----> sugar(glucose) + Oxygen
6CO2 + 6H2O ------> C6H12O6 + 6O2
Reactants -------> Products
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Photosynthesis
• Which gas is required for photosynthesis to occur?
–Carbon Dioxide (CO2)
• Which gas is produced by photosynthesis as a product?
–Oxygen (O2)
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Photosynthesis
• Takes light energy from the sun and produces food for the plant (sugars)
• Plants capture this light energy using pigments. What is the name of the pigment?
–Chlorophyll
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Photosynthesis• Photosynthesis is composed of two steps
1.) Light dependent / Light reaction- pigments capture light energy, needs light
to function
2.) Light independent / Dark reaction
- Calvin Cycle produces sugars
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Rates of Photosynthesis
• The rate of Photosynthesis can be affected by:
–Temperature (if it is too hot or cold)–Too little water–Too much or too little light
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Cellular Respiration
• Occurs in both plants and animals• Breaks down food and glucose to
produce energy in the form of ATP• ATP releases energy by breaking
the bonds and releasing a phosphate groups
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Cellular Respiration
• Know the formula for cellular respiration:
oxygen + sugar (glucose) ---> carbon dioxide + water + energy
6O2 + C6H12O6 ------> 6CO2 + 6H2O + energy
Reactants ------> Products
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Photosynthesis & Cellular Respiration• Both of these processes require various gasses to
function
• The stomata on the underside of the leaf allow for the exchange of gasses in plants
• Stomata cannot remain open all the time due to transpiration (water loss)– As a result the stomata are closed at night and during
the hottest part of the day
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