Which of the following should you expect to be occurring in a living plant cell in a living plant?
a. protons moving out of the cell via passive diffusion
b. protons being actively pumped into the cell
c. protons moving out of the cell via facilitated diffusion
d. protons being actively pumped out of the cell
e. protons moving into the cell via passive diffusion
D
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The term that best describes a symbiotic relationship in which two different microorganisms occupy the same ecologic niche but have absolutely no effect on each other is:
A) commensalism. B) mutualism. C) neutralism. D) parasitism.
Which group includes the highest proportion of critically endangered, endangered, and vulnerable species?
a. cone snails b. conifers c. freshwater shrimps d. reef-forming corals e. cycads
Hawkmoths are most likely to be attracted to flowers
that a. have red and yellow patterned petals. b. emit foul odors. c. have UV light reflective petals. d. have large, showy flowers. e. emit strong odors.
Which technique is often used to determine the identity and abundance of microorganisms in an environment? (This technique is particularly useful because it does not require culture.)
a. nucleic acid hybridization b. ribotyping c. fluorescent in situ hybridization (FISH) d. DNA chips