A scientist wants to study the effects of a new Drug X on cancer cell growth. Equal numbers of cancerous liver cells are grown on ten plates in a lab.  Drug X is added to five plates.  Water is added to the other five plates.  The ten plates of cancerous cells are incubated at 37 Celsius for two days.  After two days the plates are removed from the incubator and the number of cells is counted on each plate.   What is the control group? 

A substance that decreases the hydrogen ion concentration of a solution is known as a(n) _________. 

Read the following weights as if the weights of each bar are at the point of the arrows: Weight ___________  

You need to make a serial dilution of a protein solution.  Your initial concentration is 60 mg/ml.  What will be the concentration in the third tube?

What does NaOH stand for? 

What is the name of the acid used in the buffer experiment? 

A person’s self-esteem is rarely affected by a disability.

Identify the item.

What does HCl stand for? 

When caring for the terminally ill resident who talks of dying, the aide should: