Unit 1 - 3 AP Biology Insta-Review

Front

What happens to function when the structure changes?

Back

The function can be affected in various ways: it may not affect function, gain a new function, become nonfunctional, or all of the above.

Front

How does lower activation energy affect reaction rate?

Back

Lower activation energy increases the reaction rate.

Front

What happens to hydrogen ion concentration when pH increases?

Back

The hydrogen ion concentration decreases.

Front

What is the relationship between solute concentration and water potential?

Back

The higher the solute concentration, the lower the water potential.

Front

How can you overcome a competitive inhibitor?

Back

By adding more reactants.

Front

Define enzyme.

Back

An enzyme is a biological catalyst that speeds up chemical reactions by lowering the activation energy.

Front

What is the role of a substrate in enzyme activity?

Back

A substrate is the reactant that an enzyme acts upon.

Front

Explain the concept of competitive inhibition.

Back

Competitive inhibition occurs when a substance competes with the substrate for binding to the active site of an enzyme.

Front

What is the effect of temperature on enzyme activity?

Back

Enzyme activity typically increases with temperature up to a certain point, after which it may denature and lose function.

Front

Define pH.

Back

pH is a measure of the hydrogen ion concentration in a solution, indicating its acidity or alkalinity.