Bio 121 chapter 9 - Study guides, Class notes & Summaries

BIO 251 REVIEWER EXAM 2020 – Nevada State College REVIEWER CHAPTER 13 1. Infection occurs when A) contaminants are present on the skin B) a person swallows microbes in/on food C) a person inhales microbes in the air D) pathogens enter and multiply in body tissues E) all of the choices are correct 2. All infectious diseases A) are contagious B) only occur in humans C) are caused by microorganisms or their products D) are caused by vectors E) involve viruses as the pathogen 3. ...