3.1 Enzymes

Front

What is the active site of an enzyme?

Back

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

Front

How do enzymes affect activation energy?

Back

Enzymes decrease the activation energy required for a reaction to occur, allowing the reaction to proceed more quickly.

Front

What happens to the reaction rate when temperature increases?

Back

An increase in temperature generally results in an increase in the reaction rate, up to a certain point.

Front

What is a substrate in the context of enzymes?

Back

A substrate is any substance that is acted upon by an enzyme during a chemical reaction.

Front

Is photosynthesis an exothermic or endothermic reaction?

Back

Photosynthesis is an endothermic reaction, as it absorbs energy from sunlight.

Front

What role do enzymes play in biological reactions?

Back

Enzymes act as catalysts that speed up chemical reactions in biological systems without being consumed in the process.

Front

What is the effect of pH on enzyme activity?

Back

Each enzyme has an optimal pH range where it functions best; deviations from this range can reduce enzyme activity.

Front

What is enzyme specificity?

Back

Enzyme specificity refers to the ability of an enzyme to select and catalyze a specific substrate among many possible candidates.

Front

What are coenzymes?

Back

Coenzymes are organic molecules that assist enzymes in catalyzing reactions, often by acting as carriers for chemical groups.

Front

What is denaturation in enzymes?

Back

Denaturation is the process by which an enzyme loses its functional shape due to factors like extreme temperature or pH, rendering it inactive.