High levels of organic and inorganic materials in wastewater result in
a. high levels of waste sludge.
b. low levels of waste sludge.
c. high levels of biochemical oxygen demand (BOD).
d. low levels of biochemical oxygen demand (BOD).
Answer: C
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Answer the following statements true (T) or false (F)
1. Anton van Leeuwenhoek is given credit for developing the first compound light microscope. 2. The wavelength of visible light limits the size of objects that can be seen with the compound light microscope. 3. The resolving power of compound light microscopes can be improved by adding additional magnifying lenses. 4. A brightfield microscope can be converted to a darkfield microscope by replacing the condenser on a brightfield microscope with a darkfield condenser. 5. Primary syphilis is usually diagnosed in the clinical microbiology laboratory by the use of a scanning electron microscope.
How are cancer cells different from noncancerous cells?
The occurrence of human identical twins is evidence that:a
all human cells are totipotent. b. no human totipotent cells have been identified. c. the only totitpotent human cell is the one-cell embryo. d. cells in a two-cell human embryo are totipotent. e. cells in a two-cell human embryo are pluripotent.
What is the final electron acceptor in cellular respiration?
A) ATP B) Carbon dioxide C) NADH D) Oxygen E) FADH2