Cells Test

Cells are the basic unit of structure and function in living things.

• True
• False

Telescopes are instruments that can magnify very small objects.

• True
• False

If a microscope has a 10x lens in its eyepiece and a 20x lens in its objective, its total magnification is 100x.

• True
• False

Sugars and starches are examples of lipids.

• True
• False

The cell membrane controls the materials that enter and leave the cell.

• True
• False

A(n) enzyme helps speed a chemical reaction.

• True
• False

Organelles are tiny structures that carry out specific functions in the cell.

• True
• False

Water makes up one-third of the human body.

• True
• False

Active transport goes from high to low concentrations.

• True
• False

The ______________ is a large structure that directs the cell's activities.