Which tree has needle-shaped leaves that are adaptations for minimizing water loss?
a. cacti
b. conifer
c. broadleaf evergreen
d. deciduous angiosperms
e. mesquite
ANSWER: b
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Each chromosome has one or more ________ site(s) where replication begins.
A. promoter B. replicon C. bifurcate D. origin
Transmission of C. violaceum to humans is by:
a. exposure of disrupted skin to contami-nated water. b. ingestion of contaminated seafood or wa-ter. c. inhalation of contaminated air. d. close contact with carriers of the organism.
Which of the following describes an organism that obtains energy from light?
A) autotroph only B) phototroph only C) autotroph and phototroph D) heterotroph and chemotroph E) autotroph, phototroph, and chemotroph
Lambda DNA is replicated by
a. recombination to create concatemers. b. rolling circle replication. c. bidirectional replication. d. transduction.