Energy for Life Unit 4 – Lesson 3
NO! Nutrition How to plant cells get their energy to grow? How do animal cells get their energy to move? WE GET IT ALL FROM OUR FOOD! But, does everything eat? NO!
Nutrition Producers – organisms that have cells which make their own food. Consumers – organisms with cells that can’t make their own food.
Photosynthesis We see that plants can MAKE their food…but how? Go back to cells…remember chloroplasts?
Photosynthesis sunlight + water + carbon dioxide Photosynthesis is when the chloroplasts take: sunlight + water + carbon dioxide and make… oxygen and sugar (glucose) (oh hey, that’s food!)
Animals consume the sugars plants make – or they consume other animals that rely on plants. Animals could not exist without plants or photosynthesis!
Nutrition Once the plant makes its food by photosynthesis – it can break it down into energy! This makes the plant grow! Once the animal eats, it digests the food and breaks it down into energy! This makes the animal grow!
Nutrition The food that plants and animals make/eat is VERY complex, so it needs to be broken down into simple units by enzymes.
Enzyme
Mighty Mighty Mitochondria Respiration Once the food is broken down, what happens next? It gets turned into ENERGY! Go back to cells…Remember the mitochondria? Mighty Mighty Mitochondria Hey Guys! Remember Me!?
water + carbon dioxide + ATP Respiration Respiration occurs in the mitochondria of a cell. It takes: glucose + oxygen and turns it into… water + carbon dioxide + ATP Energy = ATP
Respiration and Photosynthesis Respiration and Photosynthesis use the same stuff. However their processes are opposite each other. They both use Water Carbon Dioxide Glucose Oxygen Energy H2O CO2 O2 C6H12O6 ENERGY
Photosynthesis Starts With Chloroplast Carbon Dioxide Sunlight Water
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Photosynthesis Ends With Chloroplast Simple Sugar Oxygen
Respiration Starts With Mitochondria Simple Sugar Oxygen
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Respiration Ends With Mitochondria A T P Carbon Dioxide Water
Photosynthesis and Respiration The two processes are almost opposites of each other. Photosynthesis produce sugars (glucose) and oxygen, which are used in respiration. Respiration produces carbon dioxide and water, which are used in photosynthesis.
Photosynthesis and Respiration CO2 + H2O + SUNLIGHT C6H12O6 + O2 CO HO GO! GO CO HO! Respiration C6H12O6 + O2 CO2 + H2O + ATP