All blood cells transport oxygen, and fight viruses or infection. True or false The cells in your body are the same ones you were born with. True or false
An organism's tissues and organs are made of cells. True or false
Cell membranes are so solid that they keep everything from going into and out of cells. True or false
The cells in your body are the same cells that you were born with. True or false

Are you sure this is physics?

Also,

1. False. White blood cells do.

2. False. Every seven years your cells are in the process of dying and being replaced. Although some cells don't die but your cells don't last for more than a period of 7 years.

3. True.

4. True.

5. False. Explained in 2.

b would be the answer

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle