If scientists noted that a protozoan developed a cyst, they could safely assume that: the protozoan developed some kind of infection the protozoan was trying to attract a mate the protozoan's living conditions deteriorated the protozoan was protecting itself from invaders

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

answer: glucoamylase presented optimum activity at temperature of 55â°c, and, in the glycosidic bonds from the non-reducing ends of starch, resulting in the production of glucose. source and type of fermentation can affect the enzyme's properties

credit to kalahira