All EXCEPT which of the following may be

pathogens today?
a. viruses
b. bacteria
c. fungi
d. smallpox
e. protozoans


Answer: d

Biology & Microbiology

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Which of the following generally causes stomata to open?

a. release of abscisic acid by the roots b. a drop in CO2 concentration in leaf air spaces c. exposure to red light d. a drop in O2 concentration in leaf air spaces e. an increase in CO2 concentration in the leaf air spaces

Biology & Microbiology

A cell membrane is a lipid _________ because the phospholipids line up in TWO ROWS to try and keep their ______________ tails away from water.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

The science and study of the causes of disease and their mode of operation is referred to as ___

a. etiology b. disease progression c. bioinformatics d. observation

Biology & Microbiology

Consider a redox reaction between molecules A and B. Molecule A has a redox potential of –100 mV and molecule B has a redox potential of +100 mV

For the transfer of electrons from A to B, is the ?G° positive or negative or zero? Under what conditions will the reverse reaction, transfer of electrons from B to A, occur?

Biology & Microbiology