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【单选题】
The box plot shown below was constructed for the amount of soda that was poured by a filling machine into 12-ounce soda cans at a local soda bottling company. We see that one soda can received 12.15 ounces of soda on the plot above. Based on the box plot presented, how would you classify this observation?
A.
highly suspect outlier
B.
suspect outlier
C.
expected observation
D.
it has a lot of soda
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【多选题】世界三大饮料包括
A.
咖啡
B.
可可
C.
D.
矿泉水
【单选题】There was no _____ for this belief.
A.
basic
B.
base
C.
basis
D.
bases
【判断题】Compounding is the process of creating new words by combining affixes and bases.()
A.
正确
B.
错误
【单选题】She always ____ her opinion ____ facts.
A.
depends, on
B.
bases, on
C.
put, into
D.
bases, by
【多选题】How are purine and pyrimidine bases recycled by salvage pathways?
A.
Free purine and pyrimidine bases are constantly released in cells during the metabolic degradation of nucleotides. Free purines are in large part salvaged and reused to make nucleotides, in a pathway much simpler than the de novo synthesis of purine nucleotides described earlier.
B.
One of the primary salvage pathways consists of a single reaction catalyzed by adenosine phosphoribosyltransferase, in which free adenine reacts with PRPP to yield the corresponding adenine nucleotide.
C.
Free guanine and hypoxanthine (the deamination product of adenine ) are salvaged in the same way by hypoxanthine-guanine phosphoribosyltransferase.
D.
A similar salvage pathway exists for pyrimidine bases in microorganisms, and possibly in mammals.
【简答题】A.points B.stations C.establishments D.bases
【简答题】A.ends B.backgrounds C.origins D.bases
【简答题】A.points B.stations C.establishments D.bases
【单选题】Which of the following statements about minor bases is wrong?
A.
In DNA, the most common minor bases are acetylated forms of the major bases.
B.
In some viral DNAs, certain bases may be hydroxymethylated or glucosylated.
C.
Altered or unusual bases in DNA molecules often have roles in regulating or protecting the genetic information.
D.
Minor bases of many types are also found in RNAs, especially in tRNAs.
【单选题】Penicillin is not stable in all of the following bases EXCEPT ()
A.
anhydrous bases
B.
water-soluble bases
C.
sodium alginate
D.
emulsion base
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