BIO100 Ch 4 Enzymes & Nutrition Practice

Front

What is the role of enzymes in biochemical reactions?

Back

Enzymes act as catalysts that lower the activation energy required for reactions, thereby increasing the rate of the reaction.

Front

What is activation energy?

Back

Activation energy is the minimum energy required for a chemical reaction to occur.

Front

What is the function of glucagon in the body?

Back

Glucagon is a hormone that stimulates the liver to break down glycogen into glucose and release it into the bloodstream when blood sugar levels are low.

Front

What are competitive inhibitors?

Back

Competitive inhibitors are substances that bind to the active site of an enzyme, preventing the substrate from binding and thus inhibiting the enzyme's activity.

Front

How do non-competitive inhibitors affect enzyme activity?

Back

Non-competitive inhibitors bind to an enzyme at a site other than the active site, causing a change in the enzyme's shape and reducing its activity.

Front

What is micronutrient overnutrition?

Back

Micronutrient overnutrition occurs when an individual consumes excessive amounts of vitamins and/or mineral supplements, leading to potential toxicity.

Front

What is the difference between enzymes and substrates?

Back

Enzymes are biological catalysts that speed up reactions, while substrates are the reactants that enzymes act upon.

Front

What factors can affect enzyme activity?

Back

Enzyme activity can be affected by temperature, pH, substrate concentration, and the presence of inhibitors.

Front

What is the significance of the active site of an enzyme?

Back

The active site is the specific region of an enzyme where the substrate binds and the reaction occurs.

Front

What is the effect of temperature on enzyme activity?

Back

Enzymes typically have an optimal temperature range; too high or too low temperatures can denature the enzyme or reduce its activity.