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

Biology & Microbiology

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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

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology

Which molecular method probes several genes or transcripts simultaneously?

a. ARISA b. DGGE c. microarrays d. T-RFLP

Biology & Microbiology