Which of the following is NOT a trait shared between green algae and land plants?
a. stomata
b. chloroplasts with chlorophyll a
c. cellulose in their cell walls
d. store energy captured during photosynthesis as starch
e. chloroplasts with chlorophyll b
A
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The mechanism of acquired, high-level resistance to vancomycin involves:
a. enzymatic destruction of the antibiotic. b. altered antibiotic targets. c. decreased intracellular uptake of the drug. d. production of altered cell wall precursors that do not bind the antibiotic with suffi-cient avidity.
Which of these is the best description of a virus?
A. chemical complexes of RNA or DNA protected by a protein shell B. a member of the kingdom Virusae C. the smallest bacteria known D. a noncellular living organism E. an invasive cell that cannot stop reproducing
Which of the following will cause a shift in the hemoglobin-oxygen dissociation curve to the right?
A) increase in temperature only B) increase in plasma pH only C) increase in 2,3-BPG (2,3-bisphosphoglycerate) only D) both an increase in temperature and an increase in 2,3-BPG E) both an increase in temperature and an increase in plasma pH
What hormone helps with adaptation to long term stress?
A. Epinephrine B. Insulin C. Melatonin D. Glucocorticoids E. Glucagon