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 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.
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