What is a major difference in the genomes of virus/bacteria vs. plants/animals?
A. The genomes of viruses/bacteria have great genetic diversity; those of plants/animals are simpler and less diverse
B. The genomes of viruses/bacteria consist almost or entirely of coding sequences; in those of plants/animals most DNA is non-protein coding
C. The genomes of viruses/bacteria are typically large; those of plants/animals are smaller
Answer: B. The genomes of viruses/bacteria consist almost or entirely of coding sequences; in those of plants/animals most DNA is non-protein coding
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A pseudomonad that loses its R plasmid in the soil is LEAST likely to
A) cause an infection in a human. B) colonize a surface. C) infect a shrub. D) survive a habitat dominated by antibiotic-producing Streptomyces spp.
A plant growth response to mechanical stress, such as rain and contact with passing animals, is known as:
a. phototropism. b. gravitropism. c. thigmomorphogensis. d. a circadian rhythm.
e. thigmotropism.
Which of the following substances functions in the body's inflammatory response to prevent blood clots, regulate body temperature, and open airways to the lungs?
A) carotenoids B) leukotrienes C) prostaglandins D) melatonin
Which of the following is not true of anaerobic respiration?
A) Involves glycolysis B) Uses the same final electron acceptors as aerobic respiration C) Generates some ATP D) Utilizes an electron transport system