Which life style factors can benefit the aging brain?

Study the diagram and then answer the following question.   What phase of cell division does this diagram best represent?

In the diagram, three atoms are shown, each has the same number of protons but a different number of neutrons.  What are these atoms called?  

Explain why it is necessary to have a control group in a well-designed scientific experiment?

What type of bond is depicted in the image?  

Examine the diagram.  Which number on the scale represents equal numbers of H+ and OH-?  

What type of solution (based on pH) is depicted in the image?  

Identify two of the three tenets of the cell theory.

List the four main tissue types.

What type of transport across the cell membrane is indicated by the diagram?