DavisSharneiceUnit2Chapter4metabolism copy.docx - Unit 2 Chapter 4 Metabolism Davis Sharneice 1 Define metabolism Sum of all chemical reactions in the

DavisSharneiceUnit2Chapter4metabolism copy.docx - Unit 2...

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Unit 2 Chapter 4 Metabolism Davis, Sharneice 1. Define metabolism. Sum of all chemical reactions in the body 2. Into what two general types may metabolism be divided? How would you define them? Anabolism-small molecules are built into larger molecules Requires ATP, provides materials for maintenance, repair, cellular growth Catabolism-larger molecules are broken down into smaller ones; release energy, ATP is produced. Uses water to split the substances 3. What is activation energy (E A )? The energy needed to activate an enzyme 4. Define catalyst (in chemical terms only). What are the catalysts in human cells? Catalyst is a protein that speed up the rate of a metabolic reaction, allows the amount of energy to be less to activate 5. What factors determine the rate of metabolic reactions? Number of enzyme and substrate molecule, and the efficiency of the enzyme 6. Define denaturation. What conditions/circumstances may cause enzymes to denature?
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