If you do not understand a direction or part of a lab procedure, you should A. skip it and go on to the next part. B. try several methods until something works. C. ask the instructor before proceeding. D. figure it out as you do the lab.

The sense of ________ is a chemical sense.

Chemicals must never come in contact with the balance pan or other parts of the balance.

When gathering glassware and equipment for an experiment, you should A.  read all directions carefully to know what equipment is necessary. B.  examine all glassware to check for chips or cracks. C.  clean any glassware that appears dirty. D.  All of the above.

Approved eye protection devices (such as goggles) are worn in the laboratory A.  to avoid eye strain. B. to improve your vision. C. only if you don’t have corrective glasses. D. any time chemicals, heat or glassware are used.

The following pieces of glassware are considered to all be accurate measures of volume: Graduated cylinder Beaker Volumetric Flask

When you read the volume of a graduated cylinder, the glassware must be stationary and stabilized (not you holding it up to look at), and you must be eye level with the volume of the liquid in the glassware. 

Which of the following proteins does the immune system use to disrupt alternative C3 convertase formation on human cell surfaces?

This course has a lab practical exam at the end that counts as two lab grades.

Approved eye protection devices (such as goggles) are worn in the laboratory A.  to avoid eye strain. B. to improve your vision. C. only if you don’t have corrective glasses. D. any time chemicals, heat or glassware are used.