Anticoagulants promote the clotting of blood
Indicate whether the statement is true or false.
Answer: FALSE
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Which microorganism species is most well-adapted to life on the skin?
A. Malassezia B. Staphylococcus epidermidis C. Streptococcus pyogenes D. Corynebacterium diphtheriae E. Candida albicans
Tetanus is a bacterial infection that is commonly acquired from puncture wounds. Why do you need to be vaccinated against the flu every year, but you only need a virus booster against tetanus every 10 years?
A. Antibody production against viruses drops off about 10 times faster than antibody production against bacterial infections, so you need to be vaccinated 10 times more frequently against the flu. B. The flu is everywhere but bacterial infections are incredibly rare, so you don't need to be as careful in maintaining your immunity against them. C. There is a higher rate of mutation in viruses than in bacteria, so you need to change the antibodies you are producing (through vaccination) every year for the flu. D. Infections that enter the body through the bloodstream (like tetanus) are much less toxic than infections that enter the body through binding to epithelial cells (like the flu).
An overgrowth of algae is often directly the result of
a. fertilizer run off. b. too little rainfall. c. too little sunlight. d. too much sunlight.
Chronic infection with ________ may progress to hepatic cancer
A) HAV B) HBV C) HCV D) HEV E) both HBV and HCV