Biology Quiz

What determines the function of a protein within an organism?

• Its size

• Its color

• Its unique three-dimensional shape

• Its weight

What is the structure of a cell membrane composed of?

• Single layer of lipids

• Phospholipid bilayer

• Protein layer

• Carbohydrate layer

Which property of water describes how much energy is required to change its temperature?

• Solvent

• Polar

• High heat capacity

• Vaporization

What is a solute?

• A liquid mixture

• A substance dissolved in a liquid solvent

• A solid mixture

• A gas

What does pH measure?

• Temperature

• Pressure

• How acidic or basic a substance is

• Density

What is the main difference between eukaryotic and prokaryotic cells?

• Eukaryotic cells have a nucleus, prokaryotic cells do not

• Prokaryotic cells have a nucleus, eukaryotic cells do not

• Both have a nucleus

• Neither have a nucleus

What is osmosis?

• Movement of air across a membrane

• Movement of water across a semipermeable membrane

• Movement of solids across a membrane

• Movement of light across a membrane

How does tonicity of a solution affect osmosis?

• By changing the color of the solution

• By determining the direction of water movement

• By altering the temperature

• By increasing the pressure

What is kinetic energy?

• Energy stored in an object due to its position

• Energy an object possesses due to its motion

• Energy stored in chemical bonds

• Energy released as heat