Biology

A pathogenic fungus invades a plant. What does the infected plant produce in res

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Which of the following would be the most effective way to prevent herbivory in a

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The transduction pathway that activates systemic acquired resistance in plants i

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Which of the following would only be activated or upregulated after a plant has

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A plant will recognize a pathogenic invader A) if it has many specific plant dis

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What is the probable role of salicylic acid in the defense responses of plants?

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When an arborist prunes a limb off a valuable tree, he or she usually paints the

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Plant hormonal control differs from animal hormonal control in that A) there are

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Unlike animal hormones, plant hormones are mainly A) hydrophobic molecules. B) p

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In cases where plants exhibit generalized defense responses in organs distant fr

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The hormone that helps plants respond to drought is A) auxin. B) gibberellin. C)

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Charles and Francis Darwin discovered that A) auxin is responsible for phototrop

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How may a plant respond to severe heat stress? A) by reorienting leaves to incre

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Mycoplasmas are bacteria that lack cell walls. On the basis of this structural f

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Though plants, fungi, and prokaryotes all have cell walls, we place them in diff

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Which statement about bacterial cell walls is false? A) Bacterial cell walls dif

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Which of the following is an important source of endotoxin in gram-negative spec

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Chloramphenicol is an antibiotic that targets prokaryotic (70S) ribosomes, but n

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In a hypothetical situation, the genes for sex pilus construction and for tetrac

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Regarding prokaryotic genetics, which statement is correct? A) Crossing over dur

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Which of these statements about prokaryotes is correct? A) Bacterial cells conju

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If all prokaryotes on Earth suddenly vanished, which of the following would be t

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In general, what is the primary ecological role of prokaryotes? A) parasitizing

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The termite gut protist, Mixotricha paradoxa, has at least two kinds of bacteria

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A fish that has been salt-cured subsequently develops a reddish color. You suspe

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