What is the counterstain used in the bacterial staining exercise? 

What is the name of the molecule in the cabbage extract that causes the color changes when exposed to acids and bases? 

Uncle Tom’s Cabin was a pro-slavery newsletter created by slave owners to combat abolitionist newspapers.

What stain is added last in the bacterial staining exercise? 

Why does a grape appear PURPLE?  Use the terms absorbance and transmission in your answer.   

BONUS QUESTION: Points will be added to exam once all exams have been turned in. Each Bonus question is worth 1 point. Britain attempted to claim parts of which territory during the War of 1812?

Which of these tubes contains an emulsifier?  Left                                   Right 

Identify the bacterial morphology 

The image shows a computer generated spirogram. Which of the following volumes represents the amount of air inhaled or exhaled  with each breath under resting conditions?

What is the total magnification of a sample viewed with this microscope?  The student is using the  40x (high power) objective.