A cell that uses an organic carbon source and obtains energy from light would be called a
A. photoheterotroph.
B. lithoautotroph.
C. photoautotroph.
D. chemoheterotroph.
E. chemoautotroph.
Answer: A
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Lignified, tube-like structures that branch throughout the body of some plants, conducting water and
solutes, are called ____.
a. vascular tissues b. apical meristems c. root systems d. rhizomes e. shoot systems
Spiders use high blood pressure for all of the
following EXCEPT to a. oppose the contraction of their leg muscles. b. extend their hind legs outward. c. assist in jumping. d. pump blood into body tissues. e. compensate for their lack of opposing leg muscles.
The famous skeleton named Lucy belong to which species?
a. Homo erectus b. Homo habilis c. Australopithecus afarensis d. Homo floresiensis e. Neanderthals
DNA is different from RNA in that
A) RNA contains an additional oxygen atom on the ribose sugar. B) RNA is made up five bases, whereas DNA is made up of four. C) RNA cannot exist as a double helix. D) in general, RNA molecules are longer than DNA molecules. E) All of these statements are true.