Question

BI 420 Medical Microbiology Name Take Home Quiz #3 Multiple Choice (1 point each) 1. Diphtheria is caused by a. Bordetella pertussis b. Corynebacterium diphtheriae c. Bordetella diphtheriae d. Escherichia diphtheriae 2. Streptococcus pyogenes is a. b. c. d. α hemolytic B hemolytic yhemolytic none of the above 3. Which of the following is characteristic of Staphylococcus aureus enterotoxin? a. not stable to heat b. causes gastroenteritis c. causes an effect after 24-48 hours d. all of the above . Which of the following is considered the most common STD in the US? a. gonorrhea b. syphilis c. AIDS d. Chlamydia trachomatis 5. In which disease do you see a characteristic ulcer or chancre on the genitals? a. syphilis b. gonorrhea c. common cold d. Chlamydia 6. The "Black Death" of the Middle Ages was a. syphilis b. bubonic plague C. AIDS d. backwoods intestinal fever

Answer 1

1. Diphtheria is a highly contagious bacterial infection of nose and throat, caused by-c) Corynebacterium diphtheriae.

2. Streptococcus pyrogenes is called as group-A streptococcus that is-b) $\beta$ -hemolytic.