Chapter 5
Enzymes
,You will learn about:
1. Describe a catalyst as a substance that increases the rate of
a chemical reaction and is not changed by the reaction.
2. Describe enzymes as proteins that are involved in all
metabolic reactions, where they function as biological
catalysts.
3. Describe why enzymes are important in all living organisms in
terms of a reaction rate necessary to sustain life.
4. Describe enzyme action with reference to the shape of the
active site of an enzyme being complementary to its substrate
and the formation of products.
,• Investigate and describe the effect of changes in temperature
and pH on enzyme activity with reference to optimum
temperature and denaturation.
• Explain enzyme action with reference to:
active site, enzyme-substrate complex, substrate and product.
• Explain the specificity of enzymes in terms of the
complementary shape and fit of the active site with the substrate.
• Explain the effect of changes in temperature on enzyme activity
in terms of kinetic energy, shape and fit, frequency of effective
collisions and denaturation.
• Explain the effect of changes in pH on enzyme activity in terms of
shape and fit and denaturation.
,
Enzymes
,You will learn about:
1. Describe a catalyst as a substance that increases the rate of
a chemical reaction and is not changed by the reaction.
2. Describe enzymes as proteins that are involved in all
metabolic reactions, where they function as biological
catalysts.
3. Describe why enzymes are important in all living organisms in
terms of a reaction rate necessary to sustain life.
4. Describe enzyme action with reference to the shape of the
active site of an enzyme being complementary to its substrate
and the formation of products.
,• Investigate and describe the effect of changes in temperature
and pH on enzyme activity with reference to optimum
temperature and denaturation.
• Explain enzyme action with reference to:
active site, enzyme-substrate complex, substrate and product.
• Explain the specificity of enzymes in terms of the
complementary shape and fit of the active site with the substrate.
• Explain the effect of changes in temperature on enzyme activity
in terms of kinetic energy, shape and fit, frequency of effective
collisions and denaturation.
• Explain the effect of changes in pH on enzyme activity in terms of
shape and fit and denaturation.
,
