GIZMOS Enzymes STEM Case Check

What is the primary role of enzymes in chemical reactions?

• To increase the temperature of the reaction

• To lower the activation energy required for the reaction

• To change the reactants into different elements

• To act as a reactant in the reaction

Which of the following best describes the relationship between amino acids and proteins?

• Amino acids are the products of protein breakdown

• Proteins are composed of chains of amino acids

• Amino acids are a type of protein

• Proteins are a type of amino acid

How does temperature generally affect enzyme activity?

• Enzyme activity decreases as temperature increases indefinitely

• Enzyme activity is unaffected by temperature

• Enzyme activity increases with temperature up to a certain point, then decreases

• Enzyme activity only increases with decreasing temperature

What is the function of proteases in the body?

• To break down carbohydrates

• To synthesize lipids

• To break down proteins into amino acids

• To store energy

Which organ is primarily responsible for the absorption of nutrients?

• Stomach

• Small intestine

• Pancreas

• Liver

What happens to an enzyme when it becomes denatured?

• It becomes more active

• It changes shape and loses its function

• It becomes a coenzyme

• It speeds up the reaction

Which of the following is a graph that typically represents enzyme activity e.g. with varying pH or temperature?

• A linear graph

• A bell-shaped curve

• A parabolic curve

• A sine wave

What is the role of cofactors in enzyme activity?

• They act as substrates

• They inhibit enzyme activity

• They assist enzymes in catalyzing reactions

• They denature enzymes

Which of the following is an example of an enzyme inhibitor?

• A substrate

• A coenzyme

• A competitive inhibitor

• A product

What is the primary function of the pancreas in digestion?

• To absorb nutrients

• To produce digestive enzymes

• To store bile

• To break down food mechanically