Respiration is called aerobic because ________.
A. it happens in the absence of oxygen
B. it requires oxygen
C. it happens in mitochondria
D. it requires carbon dioxide
Answer: B
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Which of the following is a disadvantage of using corn to manufacture ethanol as a fuel additive?
A. Ethanol contains far less energy than other fuels. B. Ethanol absorbs water and would thus corrode fuel pipelines used in transport. C. Use of corn as a fuel source drives up the cost of grain worldwide. D. All of these are disadvantages.
Repeating DNA regions of at least 1000 base pairs known as ____________________ can affect gene expression. Fill in the blank(s) with the appropriate word(s)
Where are the major deserts of the world located?
A) 30° north and south of the equator B) 23.5° north and south of the equator C) 45° north and south of the equator D) the equator
Which of the following is not true of eukaryotic translation initiation?
A. All polypeptides synthesized by cytosolic ribosomes begin with a Met residue, not an fMet. B. A special initiator tRNA is utilized for initiation by cytosolic ribosomes. C. Polypeptides synthesized by mitochondrial ribosomes begin with fMet. D. The 40S ribosomal subunit binds the mRNAbefore any initiation factors.