Enzymes Review

The graph shows how enzymes affect reactions in cells. Which statement best summarizes the information shown in the graph?

• Enzymes increase the energy of the reactants.
• Enzymes decrease the energy level of the products.
• Enzyme decrease the activation energy of the reaction.
• Enzymes reverse the direction of the reaction.

Label the parts of the enzyme model

a

b

c

d

Enzyme

Products

Active site

Substrate

Click on the temperature that this enzyme is having optimum activity.

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Cows are able to obtain nutrients needed to sustain life processes by eating grass. Humans cannot use grass as a food source. Which of the statements best explains this difference?

• Humans do not like the taste of grass.

• Cows make an enzyme to digest grass and humans do not.

• Human teeth are not fit to chew grass or other plant material.

• Cows use the grass enzymes to break down the other food they eat.

A patient has a genetic disorder that affects enzyme production in their digestive system. What might be a symptom of this disorder?

• Faster metabolism and weight loss

• Difficulty breaking down certain foods

• Increased production of ATP

• Enhanced absorption of nutrients

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A laboratory technician accidentally adds an acid to a solution containing an enzyme. What will likely happen to the enzyme activity?

• The enzyme will work faster

• The enzyme will produce more substrate

• The enzyme will be denatured and stop functioning

• The enzyme will store energy instead of catalyzing reactions

A researcher discovers a new enzyme that works best at a pH of 2. Where is this enzyme most likely found in the human body?

• The mouth

• The bloodstream

• The small intestine

• The stomach

A company wants to use enzymes to remove stains from clothing. Which factor should they consider when designing their detergent?

• The enzyme must work at varying temperatures and different pH levels

• The enzyme must produce new stains

• The enzyme should be able to store energy

• The enzyme must function only in cold water

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Select the enzyme in this image

After James eats a bowl of pasta, his digestive system breaks down the carbohydrates into simple sugars, including glucose. Once in the bloodstream, glucose is transported to his muscle cells for energy. In order for his muscle cells to use the glucose efficiently, glucose-specific enzymes must:

• Store glucose for later use in the bloodstream

• Bind to glucose and convert it into a usable form of energy

• Remove glucose from the body to prevent excess sugar levels

• Prevent glucose from entering the mitochondria

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