Microbes and Society: Chapter 9 Practice Quiz

Please read each question and select your answer from the choices provided. You must complete all of the questions in order to view your results. At the end of each exam, you have the option to e-mail your results to your instructor. (Kris.. do you want me to turn on this option?)

1: If all forms of life have been destroyed or removed from an object, that object has been:
	A: disinfected
	B: pasteurized
	C: sterilized
	D: lyophilized

2: Which of the following describes the effect of ionizing radiation on microbes?
	A: changes the 3-dimensional structure of proteins to a 2-dimensional form
	B: substantially decreases enzymatic activity, slowing microbial reproduction
	C: causes water to flow from the cytoplasm of the cell out into the environment
	D: induces electrons and protons to jump out of the molecules of the microbe

3: One drawback to the use of ultraviolet light as a sterilizing agent is its:
	A: failure to kill bacteria
	B: failure to bacterial spores
	C: failure to kill microbes in a closed environment
	D: failure to kill microbes located in the center of an object

4: Microbes can be removed from a liquid solution by the process of:
	A: filtration
	B: freeze-drying
	C: osmosis
	D: desiccation

5: Which of the following compounds are commonly used as general antiseptics to treat cuts and scratches?
	A: aldehydes
	B: ethylene oxide
	C: halogens
	D: none of the above

6: Ethylene oxide is used to destroy or kill which of the following microbes?
	A: bacteria
	B: spores
	C: fungi
	D: all of the above

7: The scientist who first discovered the substance penicillin was:
	A: Joseph Lister
	B: Louis Pasteur
	C: Alexander Fleming
	D: Paul Ehrlich

8: A broad-spectrum antibiotic such as chloramphenicol is one that:
	A: kills both Gram positive and Gram negative bacteria
	B: kills all bacteria
	C: kills numerous types of microbes
	D: kills all microorganisms

9: Which of the following is a drug that interferes with the process of DNA production in the virus that causes genital herpes?
	A: erythromycin
	B: vancomycin
	C: amantadine
	D: acyclovir

10: Nystatin is a drug used for treatment of diseases caused by a:
	A: Gram negative bacterium
	B: Gram positive bacterium
	C: yeast
	D: protozoan

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