How many pounds of fat does the average American eat per year?
a. 45
b. 22
c. 70
d. 10
e. 110
c
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Vitamins A, C, and E are known as ________ because they neutralize free radicals, therefore reducing the risk of cancer
Fill in the blank(s) with correct word
What will happen to a cell that is placed in a solution containing a high concentration of sugar, a molecule that cannot pass across the cell membrane?
a. The cell will swell up with water and burst. b. The cell will pump the salt in the cytoplasm out of the cell via simple diffusion. c. The cell will lose its interior water, causing it to shrivel up and possibly die.
Rodents are the normal hosts for which of the following encephalitis viruses?
A. eastern equine encephalitis (EEE) B. St. Louis encephalitis C. Venezuelan equine encephalitis (VEE) D. western equine encephalitis (WEE) E. West Nile virus
Which is NOT true regarding transcriptional controls in Archaea?
a. Like Eukarya, they use several transcription factors to interact with RNA polymerase. b. Their control mechanisms more closely resemble those of Bacteria than Eukarya. c. Archaeal repressor proteins block the binding of RNA polymerase or of TBP and TFB. d. Archaeal activator proteins recruit TBP to the promoter.