What is the clear like jelly substance that surrounds the nucleus of a cell?

What is the name of the anatomical position that describes the front of the body?  

Most bacteria are approximately _________ microns in size.

Which one is not a common anatomical plane?

Bacteria are divided into three main shape classifications. They are:

____________________are the upper chambers of the heart.

Microorganisms can ___________________________.

________________________carry blood back to the heart.  

Which of the following is located at the base of the neck and helps regulate the rate of metabolism and maintain the body’s levels of calcium and phosphorus?

The inside of bones are filled with_________________________________________.