A ________ combines an electronic measuring device with microbes and is used for environmental testing.
A. biosensor
B. bioreactor
C. clarifier
D. lyophilizer
E. flocs
Answer: A
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What do we call the proteins embedded in the plasma membrane that form a gap junction?
a. claudins b. cadherins c. connexins d. occludins
To overcome the water/salt balance problem, fish have specialized cells that can either take in salts or excrete salts that are located in their
a. kidneys. b. lungs. c. gills. d. pharynx. e. skin.
The by-product of the metabolism of cyanobacteria
that had the most effect on the further evolution of life is a. oxygen gas. b. carbon dioxide. c. water. d. nitrogen gas. e. hydrogen gas.
Some viruses leave a cell by pushing through the cell membrane (rather than lysing the cell). When this happens, a portion of the membrane wraps around the viral capsid, becoming the envelope. What is the name for this process?
a. Budding b. Biosynthesis c. Conjugation d. Lysogeny