Lab Exam #1 – Microbiology with correct answers 100% 2026

Lab Exam #1 – Microbiology with correct answers 100% 2026 Contamination is most often due to ... - Correct Answer failure to adhere to appropriate procedures Differentiation of bacteria into two major groups using the Gram stain is based on ... - Correct Answer differences in cell wall structure A culture media that contains one or more ingredients that inhibit the growth of certain microbes, but not others, is called a(n) ... - Correct Answer selective media Microscope slides and any broken glass generated in the laboratory should be ... - Correct Answer placed into the cardboard glass disposal box located in the laboratory area Which is the greater distance - 1 mile or 1 kilometer? - Correct Answer 1 mile Which of the following is a function accomplished by heat fixation? - Correct Answer enhances absorption of the primary stain If the instructions state to examine a specimen at a total magnification of 400X, and your microscope has a 10X ocular lens; which objective lens must be used? - Correct Answer 40X Due to the nature of the microbiology laboratory environment, which of the following is a primary concern? - Correct Answer safety What is the purpose of a "blue" filter used with a microscope? - Correct Answer restrict longer wavelengths of light from striking the specimen The mordant used for the Gram stain procedure is ... - Correct Answer iodine The total magnification achieved when using a 15X ocular lens and 45X objective lens would be ... - Correct Answer 675X What is the base unit for linear distance in the metric system? - Correct Answer meter How many kilograms is equal to 5000 milligrams? - Correct Answer 0.005 kilograms If John is 6'2" tall and the doorway is 2 meters tall, can John walk through the doorway upright or must he bend over to avoid hitting his head? - Correct Answer John can walk through the doorway upright without hitting his head How many centimeters is equal to 10 inches? - Correct Answer 25.4 centimeters Which is the greater volume - 5 quarts or 6 liters? - Correct Answer 6 liters The primary stain used for the Gram stain procedure is ... - Correct Answer crystal violet The magnification achieved by a light microscope is ... - Correct Answer a function of the interaction of light rays with the curvature of the lens Who is credited with the invention of the first usable microscope? - Correct Answer Antoine van Leeuwenhoek