Which of the following gas that can sterilize?
peracetic acid
chlorine
phenol
ethylene oxide
ethylene oxide
Biology & Microbiology
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Those organisms that thrive in an environment free of oxygen are called
a. phytoplankton. b. zooplankton. c. nekton. d. anaerobes. e. aerobic.
Biology & Microbiology
Leghemoglobin, which contains an iron-containing heme group, is used to
a. remove O2 from roots. b. produce H2O from O2. c. deliver O2 to bacteroids. d. transport O2 in the xylem. e. produce O2 from H2O.
Biology & Microbiology
What do phylogenetic trees show?
What will be an ideal response?
Biology & Microbiology
?
?
Figure 36.2A
Circulation in the above diagram functions primarily as a(n) ____.
A. closed circulatory system B. open circulatory system C. semi-closed circulatory system D. system of exchange using capillaries E. continuous system of vessels
Biology & Microbiology