What are Cells

What are cells?

• the smallest thing that make up all living things
• building blocks of life
• basic unit of life
• all of the above

Cells fit together like a jig-saw puzzle to form a larger unit called 

• an organ
• a tissue

What do red blood cells do in our bodies?

• carry oxygen to all parts of our bodies
• fight germs
• make infections go away
• keep our skin smooth

What do white-blood cells do?

• carry oxygen to all parts of our body
• fight germs
• make our skin smooth
• carry electrical messages

Which statement is true about cells? 

• All plants and animals are made up of cells
• Cells perform many jobs in our body
• Cells copy themselves by dividing
• All of the above

What does contagious mean?

• illness or infection that can be passed from one person to another
• illness or infection that cannot be passed from one person to another

Which of the following is NOT contagious?

• Cold
• Flu
• Cancer
• Chicken Pox

What are germs?

• dead cells
• medicines to make you feel better
• tiny living things that can make you sick
• none of the above

Which will fight germs?

• white blood cells
• red blood cells
• muscle cells
• nerve cells

True or False: Healthy cells know when to stop dividing.

• true
• false