Enzymes are proteins that act as catalysts to speed up chemical reactions in the body.

Enzymes are lipids that store energy.

Enzymes are carbohydrates that supply glucose.

Enzymes are nucleic acids that form genetic material.

A catalyst speeds up a chemical reaction without being consumed in the process.

A catalyst slows down a reaction and is used up.

A catalyst acts as a reactant in chemical reactions.

A catalyst permanently changes shape during a reaction.

Amylase

Lipase

Protease

Lactase

The active site is the region on an enzyme where substrate molecules bind and undergo a chemical reaction.

The active site is a region where enzymes are stored in cells.

The active site is a section of the substrate that is modified by the enzyme.

The active site is where enzymes are created.

Enzymes lower the activation energy required for a reaction, making it easier for the reaction to occur.

Enzymes increase the activation energy required, making reactions occur faster.

Enzymes do not affect the activation energy of reactions.

Enzymes double the activation energy needed.

True

False

Substrate specificity refers to the ability of an enzyme to recognize and bind to specific substrates.

Substrate specificity means enzymes can react with any substrate.

Substrate specificity indicates the enzyme's inability to react.

Substrate specificity defines the enzyme's production path.

A substrate is a molecule upon which an enzyme acts.

A substrate is a type of enzyme.

A substrate is a protein that inhibits enzymes.

A substrate is the product of an enzyme reaction.

The induced fit model suggests that the shape of an enzyme's active site changes slightly to fit the substrate more tightly.

The induced fit model suggests enzymes change the substrate chemically before the reaction.

The induced fit model suggests enzymes are rigid and do not change shape.

The induced fit model applies only to non-protein enzymes.

Temperature is an environmental factor that can affect enzyme activity. Too high or too low temperatures can denature enzymes.

Humidity

Wind speed

Altitude

Enzyme denaturation is the process where the enzyme loses its structure and, subsequently, its function due to factors like heat or pH changes.

Enzyme denaturation is the enhancement of enzyme activity.

Enzyme denaturation is a reversible process where enzymes gain activity.

Enzyme denaturation is related to the formation of new enzymes.

Enzymes are reusable because they are not consumed in the reaction and can be used repeatedly for the same type of reaction with new substrate molecules.

Enzymes are reusable because they regenerate after being consumed.

Enzymes are one-time-use biomolecules.

Enzymes can only be used twice before they degrade.

The pH level can affect enzyme activity because enzymes have an optimal pH range where they are most active. Extreme pH levels can denature enzymes.

Enzyme activity is unaffected by pH.

pH affects only the substrates, not enzymes.

Lower pH always increases enzyme activity.

Competitive inhibition occurs when a substance similar to the substrate competes for binding at the enzyme's active site, blocking the actual substrate.

Competitive inhibition is when enzymes compete for the same substrate.

Competitive inhibition is when an enzyme breaks down its own structure.

Competitive inhibition refers to enzymes that speed up after a reaction.

Enzyme activity can be regulated through feedback inhibition, where the end product of a pathway inhibits an early step to control the pathway's activity.

Enzyme activity in cells is unregulated.

Enzyme activity is regulated by complete removal from the cell.

Cell growth prevents enzyme regulation.