The presence of a contractile vacuole indicates that a single-celled protist _____
a. is marine c. is photosynthetic
b. lives in fresh water d. secretes a toxin
B
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_____ is the process in which two groups of organisms living in the same habitat diverge into separate species
A. allopatric speciation B. peripatric speciation C. adaptive radiation D. co-speciation E. sympatric speciation
Which of the following domains contain prokaryotic cells?
a. Archaea and Bacteria b. Eukarya and Archaea c. Bacteria and Eukarya d. Archaea, Bacteria, and Eukarya
When a protein denatures, what happens to it?
a. it becomes a functional protein b. it combines with sugars to become a signaling protein c. it changes its shape and to assume another function d. it unwinds and loses its three dimensional shape e. it is transported out of the cell
Which molecular method probes several genes or transcripts simultaneously?
a. ARISA b. DGGE c. microarrays d. T-RFLP