U2 Practice Test (Version 2)

Helps move cell and fluid

• Cilia
• Centrosome
• Lysosome
• Nucleus

Answer explanation

Cilia are hair-like structures that help with movement of the cell or fluids around it.

A membrane that lets some substances pass through but not others

• Semipermeable
• Diffusion
• Active Transport
• Homeostasis

Answer explanation

Semipermeable membranes allow selective entry of substances, controlling the cell environment.

Molecules moving from high to low concentration

• Diffusion
• Osmosis
• Active Transport
• Exocytosis

Answer explanation

Diffusion is the passive movement of molecules from an area of high to low concentration.

Phospholipid heads are fatty acids with hydrophobic properties.

• False
• True

Answer explanation

Phospholipid heads are hydrophilic, while the tails are hydrophobic.

Packages macromolecules

• Golgi Apparatus
• Ribosome
• Nucleus
• Mitchondria

Answer explanation

The Golgi apparatus modifies, sorts, and packages macromolecules for transport.

Stores nutrients and waste

• Vacuole
• Ribosome
• Lysosome
• Nucleus

Answer explanation

The vacuole stores nutrients and waste products in cells.

Hydrophilic is the property of repelling water.

• False
• True

Answer explanation

Hydrophilic means water-attracting, not repelling.

Water-loving; attracts water

• Hydrophilic
• Hydrophobic
• Phospholipid
• Peripheral Protein

Answer explanation

Hydrophilic substances attract and interact well with water.

A small sac that transports materials within or outside the cell

• Vesicle
• Hydrophilic
• Phospholipid
• Protein Pump

Answer explanation

Vesicles transport materials within the cell or to the outside.

Which cell has chloroplasts?

• Animal Cell
• Plant Cell
• Both

Answer explanation

An animal cell is shown, likely identified by the absence of a cell wall.