Which of the following is not one of the principal types of surfaces used by animals to facilitate gas
exchange?
a. bronchial tubes
b. body surface
c. gills
d. lungs
e. tracheal tubes
A
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You decide to plant a garden in your backyard. You dig up a strip of grass in a sunny spot. When you have finished digging up the grass, but you haven't planted anything, you have created a/an ______________ in the lawn
A. ecological disturbance B. new community C. Both responses are correct. D. None of the responses are correct.
The bacterial species that can be described as able to grow in 6.5% sodium chloride (NaCl) and 40% bile, is part of the normal fecal flora of animals and humans, displays hemolysis, and is a major cause of nosocomial infections is:
a. E. faecalis. b. S. pneumoniae. c. S. pyogenes. d. S. agalactiae.
The base of the food web in the open ocean and the bottom beneath the open ocean is:
a. algae. b. seagrasses. c. chemosynthetic bacteria. d. phytoplankton. e. detritus.
Neisseria meningitidis and Neisseria gonorrhoeae are fastidious, gram-negative cocci that produce oxidase.
a. true b. false