Cilia are found in certain
A) Protozoa
B) Fungi
C) Algae
D) Bacteria
E) All of the above
A) Protozoa
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Considering the global carbon cycle, where are humans having a great impact?
I) terrestrial ecosystems II) oceans III) atmosphere A) only I B) only II C) only III D) only I and III E) I, II, and III
Transmembrane proteins must have:
A. a signal sequence. B. a signal-anchor sequence. C. a nuclear localization sequence. D. both a signal sequence and a signalanswer sequence.
Bioaccumulation occurs when an animal ingests
a. an animal who has eaten toxic materials. b. a plant that has absorbed toxins. c. toxins directly from the environment. d. all of these
Forests containing ____ trees once stretched unbroken across eastern North America, Europe and eastern Asia before
farmers cleared the land.
a. white spruce and balsam fir b. sages c. epiphytes d. teak e. ash, beech, birch, elm, and oak