Checkpoint Practice: The Microscopic World- Atoms and Cells

What are the smallest units of matter?

• cells

• atoms

Where are the protons located in the atom?

• in the nucleus

• in the rings

Cells are measured in...

• Micrometers

• Nanometers

• Centimeters

• Meters

The atomic number is:

• the number of protons in the nucleus of an atom

• the number of protons + neutrons in the nucleus of an atom

What is a group of organs working together called?

• Tissue

• Organ

• System

Cells can be different sizes and shapes.

• True

• False

Cells are big enough to see without a microscope

• True

• False

What is a group of cells working together called?

• Tissue

• Organ

• System

Which organelle packages and transports proteins?

• Golgi Body

• Endoplasmic Reticulum

• Vesicles

• Cytoskeleton

Where are electrons located in an atom?

• in the nucleus

• in the rings