Chemoautotrophs oxidize which of the following to obtain the energy necessary to reduce carbon dioxide to an organic compound?
A. ammonia
B. hydrogen sulfide
C. hydrogen gas
D. nitrites
E. All of the above.
Answer: E
Biology & Microbiology
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Hemophilia is characterized by ____
a. defects in the mechanism of blood clotting b. an extremely low blood iron level c. jaundice of the eyes and skin d. muscular weakness and atrophy e. breathing difficulties
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In eukaryotic cells, the sequences of mRNA that are removed from an mRNA molecule before being translated are
A. exons. B. anticodons. C. proteomes. D. terminators. E. introns.
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STDs caused by viruses can be effectively treated with antibiotics.
Answer the following statement true (T) or false (F)
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Mitosis comes from the Greek word "mitos," which means ____________.
A. to divide B. to grow C. to swell D. thread E. to shrink
Biology & Microbiology