In vertebrates, the analogous structure to the notochord is
A) a nerve cord. B) jaws. C) a backbone. D) fins. E) a skull.
C
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Which of the following best explains why "carbs" (carbohydrates) are advertised by manufacturers of candy bars and sports drinks as a "quick energy boost"?
A) The energy in them can be stored as fat, which has high energy per unit weight. B) The carbons in carbohydrates are rich in energy because they are highly oxidized. C) Carbohydrates are reduced molecules that have high-energy electrons. D) This is an advertising gimmick that has no scientific evidence to support it.
Which of the following is not true of the formation of a eukaryotic translation initiation complex?
A. eIF4F binds to the 5' cap of the mRNA. B. eIF2 binds to the A site to block the binding of the initiating tRNA. C. At least two GTP molecules are hydrolyzed per initiation event. D. eIF1, eIF1A, eIF2, and eIF3 are displaced before the 60S subunit joins the 40S subunit.
Which of the following is technically NOT a fruit?
A) Tomato B) Cucumber C) Pumpkin D) Lettuce E) Green pepper
The ________ method provides an estimate of the CFUs (colony-forming units) in a sample.
A. Coulter-counter B. viable plate-count C. streak-plate D. turbidity E. direct microscopic-count