Chapter 8.1 and 3.2 Energy and Life.pdf - Chapter 8.1 and 3.2 Energy and Life WI Energy The capacity to do work Production and use of energy I ORGANISMS

Chapter 8.1 and 3.2 Energy and Life.pdf - Chapter 8.1 and...

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Unformatted text preview: Chapter 8.1 and 3.2 Energy and Life WI Energy? The capacity to do work. Production and use of energy. I. ORGANISMS A.) Autotrophs- Organisms that can capture energy from sunlight or chemicals and produce food from inorganic compounds. (AKA Producers) B.) Heterotrophs- obtain energy from food they consume. (AKA Consumers) How do autotrophs make food? -Make glucose a little ATP+NADPH for the plant. Takes place in the chloroplast Why heterotrophs obtain energy? ATP production ATP Is the molecule Organisms produce to perform functions such as muscle contraction, active transport, metabolism, and every bodily function. What makes ATP so important? ● ● ● It’s the only form of chemical energy organisms can use. It’s like cellular money. How does ATP work? ● ● ● PHOSPHATE GROUPS ARE ALL NEGATIVELY CHARGED. 2 negatives repel each other There is a small amount of ATP in each cell and is reused very quickly How do organisms produce ATP ATP is made by harvesting energy from glucose, proteins, and fatty acids made by plants and animals. Through cellular respiration all organisms make ATP…….. EVEN PLANTS! Photosynthesis makes glucose and that’s the energy we get from plants and use that energy to make ATP. End of notes check up 1.) Plants and animals use what molecule to store energy just before its used? 2.) What is the difference between a heterotroph and an autotroph? 3.) What organisms use cellular respiration? 4.) What is food for plants? 3.2 energy flow Autotrophs- What kind are there? 1.)Organisms that make their own food. a.)Photosynthetic- Uses energy from sunlight to make energy rich molecules b.)Chemosynthetic- Use energy from inorganic molecule to make energy rich molecules What are the 3 types of heterotrophs 1.)Heterotrophs types a.)Carnivore- Eat animals b.)Omnivore- Eat plants and animals c.)Herbivore- Eat plants What is energy flow? -Energy flows through a food chain. -Some goes to the next trophic level,some to heat. Energy moves in one direction(to the next trophic level) A food web is just multiple food chains connected ECOLOGICAL PYRAMID Only 10% makes it to the next level (Biomass, energy, orgaism numbers ) How does energy move? -Biomass -Energy -Population numbers Some goes to the next trophic level some goes to heat TROPHIC LEVELS a.)Producers b.)Primary consumers c.)Secondary consumers d.)Tertiary consumers Trophic level :Step in a food chain ...
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  • Fall '16
  • David Miller

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