Which of the following are primary sources? (Select all that apply). 

If the codon AAA is changed to AGA, it no longer codes for lysine; this is an example of a ________.

Which domain of life possesses flagella that are hollow, not enclosed in a cytoplasmic membrane, and are powered by a proton motive force?

List the five types of glial cells, and briefly describe the function of each type of cell.

The nucleus of human cells contains how many pairs of chromosomes?

The thick band of white matter which allows the two hemispheres of the brain to communicate is known as the ____________.

This disease involves the immune system attacking and destroying the myelin that surrounds axons

The notion that all behavior can be explained by the workings of the brain is commonly referred to as ___________.

What is the name of the structure that prevents large molecules from entering the brain?

The axons hillock is: