Gametes are ____, because these sex cells must combine to form a zygote after fertilization. 

Cultures of a bacterial species were incubated out on the incubator shelf, in an anaerobic jar and in a candle jar (closed jar with a candle added which burns until no oxygen remains). After incubation there was moderate growth of cultures in the candle and anaerobic jars, but heavy growth of the culture on the incubator shelf. This species is a/an:

Which of the following will reduce the length of time required to sterilize a microbial culture in an autoclave? (select all that apply)

Isopropyl alcohol wiped across a skin site prior to giving an injection can sterilize it.

All of the following are helminths (parasitic worm) or helminth infections, except:

The antiseptic betadine is a _______level germicide, and alcohol is rated _____ level. 

Which infection type is mismatched?

Someone who has an infection, but is showing no outward signs or symptoms accidentally spreads the infection to others is best described as a/an:

Endogenous infectious agents arise from microbes that are:

Non-ionizing radiation can disinfect by causing ___.