AP Biology - Energy & Enzymes

Front

What is competitive inhibition in enzymatic reactions?

Back

Competitive inhibition occurs when a substance competes with the substrate for binding to the active site of an enzyme, thereby reducing the rate of the reaction.

Front

What is a substrate in the context of enzymatic reactions?

Back

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

Front

Where do substrates bind on an enzyme?

Back

Substrates bind to the active site of an enzyme.

Front

What type of reaction is represented by the equation A --> B + C?

Back

This equation represents a catabolic reaction, where a larger molecule (A) is broken down into smaller products (B and C).

Front

Which enzyme works under the most restricted pH range according to the graph?

Back

Enzyme D works under the most restricted pH range.

Front

What is the role of enzymes in biological reactions?

Back

Enzymes act as catalysts that speed up biochemical reactions by lowering the activation energy required for the reaction to occur.

Front

What factors can affect enzyme activity?

Back

Factors that can affect enzyme activity include temperature, pH, substrate concentration, and the presence of inhibitors or activators.

Front

What is the difference between an anabolic and a catabolic reaction?

Back

An anabolic reaction builds larger molecules from smaller ones, while a catabolic reaction breaks down larger molecules into smaller products.

Front

What is the significance of the active site in enzyme function?

Back

The active site is the specific region of an enzyme where substrates bind and undergo a chemical reaction, making it crucial for enzyme specificity and activity.

Front

How does temperature affect enzyme activity?

Back

Enzyme activity typically increases with temperature up to an optimal point, beyond which the enzyme may denature and lose its function.