Beach erosion is often caused by structures built to prevent erosion.
a. true
b. false
Ans: a. true
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A culture performed on a vaginal specimen collected from a 38-year-old woman would likely grow primarily:
a. group B hemolytic streptococci. b. staphylococci and corynebacteria. c. lactobacilli, Enterobacteriaceae, strepto-cocci, and staphylococci. d. G. vaginalis, Prevotella spp., Peptostrep-tococcus spp., and Mobiluncus spp.
Transcription
a. involves both strands of DNA as templates. b. uses the enzyme DNA polymerase. c. results in a double-stranded end product. d. produces three different types of RNA molecules. e. fits all of these descriptions.
Which of these common "vegetables" should technically be called a "fruit"?
A. Potato B. Carrot C. Lettuce D. String beans E. Celery
Some cyanobacteria form ________, which are comprised of chains of bacterial cells that are in close contact with one another over a large area.
A. cell mats B. mycelia C. trichomes D. hypha