What is a possible disadvantage of using genetically modified crops?
A) The transgene may make its way into wild plants.
B) Transgenic strains are typically less robust than the usual strains used for farming.
C) The ability of transgenic plants to use nutrients is reduced so more fertilizer has to be applied.
D) The ability of transgenic strains to use water is poor so these strains are not drought tolerant.
A) The transgene may make its way into wild plants.
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In photosynthesis, NADH and NADPH are produced from NAD+ and NADP+ by
A) oxidation reactions. B) reduction reactions. C) both oxidation and reduction reactions. D) neither oxidation nor reduction reactions.
Assaying bacterial isolates for resistance genes by molecular methods:
a. can detect unknown resistance genes not yet defined. b. cannot detect phenotypic resistance due to a combination of mechanisms. c. means the resistance gene is expressed if found to be present. d. is currently part of the routine clinical mi-crobiology workflow for all isolates.
Areas of the body such as the lips or fingers are represented by ____ regions of the somatosensory cortex; the arms
and legs are represented by relatively _____ regions of the somatosensory cortex.
a. large; small b. small; large c. motor; sensory d. sensory; motor e. cerebellum; brain stem
Ectothermic animals:
a. are more likely to use metabolism for heat b. shun the sun during the daylight hours c. are more adapted to cold d. are more likely to use behavioral temperature regulation e. maintain their body temperature within a narrower range