________ act as proton pumps and keep the internal proton concentration of lysosomes high.
Fill in the blank(s) with the appropriate word(s).
ATPases
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Most known plant viruses are RNA viruses.
Answer the following statement true (T) or false (F)
Small areas that are home to a large number of threatened species and an exceptional concentration of species found nowhere else on Earth are called
A) biomes. B) movement corridors. C) biodiversity hot spots. D) local populations.
High titers of specific antibodies are components of
A. toxoids. B. attenuated vaccines. C. immune serum globulin (ISG). D. specific immune globulin (SIG). E. gamma globulin.
People who wash their hands frequently during cold season typically have fewer colds than those who do not. This observation suggests cold viruses can be transmitted by
A. fomites. B. mechanical vectors. C. biological vectors. D. direct contact. E. both direct contact and fomites.