The Gram stain is important in medical microbiology because the results help physicians select appropriate antibiotics for treatment
a. true
b. false
Ans: a. true
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In active transport, what provides the energy needed to move ins or molecules across the membrane?
a. sodium & potassium ions b. calcium ions c. sodium ions alone d. ATP molecules
The entire set of DNA in a cell is an organism's
A.) karyotype. B.) chromatids. C.) genome. D.) pedigree.
Household ammonia has a pH of 12; household bleach has a pH of 13. Which of the following statements about these substances is true?
A) Both of these substances are strong acids. B) The ammonia has 10 times as many OH- ions as the bleach. C) The ammonia has 10 times as many H+ ions as the bleach. D) A solution that could buffer the bleach and ammonia would remove excess OH- ions.
________ is characterized by unusually warm ocean temperatures in the eastern Pacific.
Fill in the blank(s) with the appropriate word(s).