Biology Unit 2 Practice Test

Front

What is the role of enzymes in chemical reactions?

Back

Enzymes lower the activation energy needed for a reaction to occur, making reactions faster.

Front

What type of biomolecule is amylase?

Back

Amylase is a protein that breaks down starch into simple sugars.

Front

What are the primary functions of lipids in organisms?

Back

Lipids store long-term energy and form membranes.

Front

What happens to enzymes when the temperature inside a cell becomes too high?

Back

Enzymes denature and lose their shape, which affects their function.

Front

How do viruses reproduce?

Back

Viruses use the host cell's machinery to reproduce.

Front

What is activation energy?

Back

Activation energy is the minimum energy required for a chemical reaction to occur.

Front

What are the main types of biomolecules?

Back

The main types of biomolecules are carbohydrates, proteins, lipids, and nucleic acids.

Front

What is the function of proteins in biological systems?

Back

Proteins serve various functions including acting as enzymes, structural components, and signaling molecules.

Front

How do enzymes affect the rate of chemical reactions?

Back

Enzymes increase the rate of chemical reactions by lowering the activation energy.

Front

What is the difference between saturated and unsaturated fats?

Back

Saturated fats have no double bonds between carbon atoms, while unsaturated fats have one or more double bonds.