Which chemical is used in both water purification and sewage treatment to provide long-term disinfection?
A. Chlorine
B. Activated charcoal
C. Fluorine
D. Copper sulfate
Answer: A
Biology & Microbiology
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When describing phylogenetic trees, each branching point is called a
a. clade d. lineage b. node e. split c. point
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List several diseases caused by protozoa. Include the causal organism, the group in which it is
classified, and its means of transmission when possible. What will be an ideal response?
Biology & Microbiology
The main osmoregulatory and excretory organ in most vertebrates is the:a
skin. b. gill. c. metanephridium. d. lung. e. kidney.
Biology & Microbiology
Which of the following do you expect to be MOST resistant to high temperatures?
A) Bacillus subtilis B) Eschericia coli C) Neisseria gonorrhoeae D) Staphylococcus aureus E) Streptococcocus pyogenes
Biology & Microbiology