21) Flotation is a method used by scientists to determine what about a particle of glass?  

49) Which of the following is a homemade explosive that has been used by terrorist organizations in the Middle East?  

24) The fracture pattern of a piece of glass usually exhibits what kind(s) of lines?  

9) Which feature of hair is most important in making a species identification?  

3) The rate of alcohol absorption on a full stomach is ________ the rate of absorption on an empty stomach.    

10) What is the central canal / cellular column running through many hairs known as?  

29) Which of the following is not a priority of a criminalist examining dried blood evidence?  

6) Blood is drawn from a living suspect involved in an automobile accident. If the specimen is not properly preserved, the alcohol concentration can be expected to do what?  

25) This diagram shows two holes in the same pane of glass. Which hole was the first one in the glass pane?    

1) What is the percentage of evidence evaluated in the crime lab that is drug related?