Which species causes the waterborne disease giardiasis?
a. euglenoids
b. trypanosomes
c. diplomonads
d. parabasalids
e. any anaerobic protozoans
c
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Which of the following polymerases functions in translesion synthesis and is considered error-prone because it lacks the 3'-5' exonuclease activity used for proofreading?
A. DNA Pol I B. DNA Pol II C. DNA Pol III D. DNA Pol IV E. None of these choices is correct.
Which of these can found in oak wood but not in pine wood?
A. secondary xylem B. secondary phloem C. vessel members D. tracheids E. ray cells
Today, almost all cheese is made with ____ chymosin produced by transgenic____
a. pig; yeast b. bacterial; yeast c. calf; yeast d. sheep; bacteria e. bacterial; calf
The nucleus of a eukaryotic cell is separated from the cytoplasm by the
1.plasma membrane. 2.cell wall. 3.endoplasmic reticulum. 4.ribosomes. 5.nuclear envelope.