Eat like a bird You hear it about people who don’t eat much. People say they “eat like a bird.” Yet birds eat a larger proportion of their weight every day than even the heartiest human eaters. Birds eat a high-energy diet of seeds, fruit, worms, insects, fish or meat---maximum energy, minimum bulk. Digestion is fast and thorough. Food energy is spent in flight, in keeping warm----- in simply being a bird. What is the relationship between an animal’s metabolism and the amount of food it eats? Use a comparison between birds and humans in your answer. (look in your glossary for the word metabolism)
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Eat like a bird You hear it about people who don’t eat much. People say they “eat like a bird.” Yet birds eat a larger proportion of their weight every.
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Eat like a birdYou hear it about people who don’t eat much. People say they “eat like a bird.” Yet birds eat a larger proportion of their weight every day than even the heartiest human eaters.
Birds eat a high-energy diet of seeds, fruit, worms, insects, fish or meat---maximum energy, minimum bulk. Digestion is fast and thorough.
Food energy is spent in flight, in keeping warm-----in simply being a bird.
What is the relationship between an animal’s metabolism and the amount of food it eats? Use a comparison between birds and humans in your answer. (look in your glossary for the word metabolism)
Macromolecule Review
• 4 major groups
• Monomers & Polymers
• Functions
Concept: Enzymes
• Lesson Essential Question: How would a change in enzyme activity affect a living system?
• To understand enzymes, we have to understand basic chemistry including chemical reactions and how living things use macromolecules to chemically obtain energy for life’s functions.
Chemical Reactions & Energy
• Energy is stored or released by chemical reactions
• Bonds are broken and new bonds formed between atoms
• Different substances can be produced• Reactants are the starting materials for
chemical reactions• The newly formed substances are called
products.
Chemical Reactions
• Chemical reactions are summarized by chemical equations