Enzyme Function and Reactions

The video explains the importance of enzymes as biological catalysts that increase the rate of chemical reactions. It covers their role in processes like cellular respiration, where they help produce energy efficiently. The video also discusses how enzymes reduce the energy needed for reactions, making them faster. Factors affecting enzyme activity, such as temperature and pH, are explored, with examples like lactose intolerance and animal digestion.

What is the primary role of enzymes in chemical reactions?

• To act as biological catalysts

• To increase the temperature of reactions

• To slow down reactions

• To change the products of reactions

In the vinegar and baking soda experiment, what are the reactants?

• Water and sodium acetate

• Baking soda and carbon dioxide

• Vinegar and water

• Vinegar and baking soda

What is the role of the active site in an enzyme?

• To change the enzyme's shape

• To store energy

• To bind with specific substrates

• To release products

During cellular respiration, what are the reactants?

• Glucose and carbon dioxide

• ATP and water

• Glucose and oxygen

• Carbon dioxide and water

How do enzymes affect the energy required for reactions?

• They increase the energy required

• They decrease the energy required

• They change the type of energy used

• They have no effect on energy

What is the significance of the blue line in the energy chart?

• It shows the time taken for reactions

• It indicates the temperature change

• It represents the energy saved by using enzymes

• It shows the energy required without enzymes

Where are digestive enzymes primarily produced in the body?

• In the liver

• In the pancreas

• In the stomach

• In the kidneys

What is activation energy?

• The energy used to break down enzymes

• The energy stored in products

• The energy released during a reaction

• The energy required to start a reaction

How does a fever affect enzyme activity?

• It changes the enzyme's structure

• It can inhibit enzyme activity

• It has no effect on enzymes

• It enhances enzyme activity

What condition is caused by the lack of the enzyme lactase?

• Vitamin deficiency

• Protein deficiency

• Lactose intolerance

• Gluten intolerance