12. When placing your scopes away at the end of the lab session, you should ensure that the objective lens is directly o

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12 When Placing Your Scopes Away At The End Of The Lab Session You Should Ensure That The Objective Lens Is Directly O 1 (39.52 KiB) Viewed 101 times

12. When placing your scopes away at the end of the lab session, you should ensure that the objective lens is directly over the stage and that the has been adjusted to its lowest setting to prevent damage to the bulb when it is turned on again. (2 points) Lab #4 13. What is the function of a mordant when performing various differential stain techniques? What is the mordant in the Gram staining technique? (2 points) 14. When the Gram staining technique is performed correctly, bacteria that stain purple with the crystal violet are classified as Gram- bacteria. (1 point) 15. After the addition of the 95% Alcohol, all of the bacteria that are considered to be Gram- will be colorless, until the counterstain is applied. (1 point) 16. The differential staining technique is useful in identifying bacteria possessing mycolic acid (wax) in their cells walls. A clinically important genus of bacteria that has mycolic acid in its cell walls is (2 points) 17. Clostridium and Bacillus are both clinically important genera of bacteria that produce tough structures used to protect their DNA during times of environmental stress. (1 point) 18. A media contains inhibitory agents that prevent or significantly reduce the growth of certain kinds of bacteria. (1 point)