Enzyme Assignment Answer Key.docx

Enzyme Assignment Answer Key.docx - 1 At very high...

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1. At very high temperatures (e.g., above 100°C), enzymes cease to perform their function. This happens because the high temperature A. causes the substrate to move so fast the enzyme cannot bind to it B. denatures the cofactor C. converts the enzyme into product molecules D. destroys the shape of the enzyme 2. Which of the following statements is FALSE ? A. The lock and key model refers to the specificity of an enzyme for its substrate B. Cofactors bind to substrate molecules and prevent enzymatic reactions from occurring C. Temperature and pH have significant effects on the activity of an enzyme D. Enzymes are proteins that are synthesized by ribosomes 3. In the “lock and key model” of enzyme activity, which molecule is described as the “key”. The enzyme, substrate or product. A. Enzyme B. Substrate C. Cofactor D. Inhibitor 4. Lactase is an enzyme that converts lactose to glucose and galactose. A scientist measured the time it took lactase to convert the lactose in different pH environments. His results are
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