A-A+

All of the following statements are supported

2022-08-05 17:07:52 问答库 阅读 170 次

问题详情

All of the following statements are supported by the passage EXCEPT______
A.True bacteria form. a distinct evolutionary group.
B.Archaebacteria are prokaryotes that resemble true bacteria.
C.True bacteria and eukaryotes employ similar types of genetic coding.
D.True bacteria and eukaryotes are distinguishable at the subcellular level.
E.Amino acid sequences of enzymes are uniform. for eukaryotic and prokaryotic organisms.请帮忙给出正确答案和分析,谢谢!

参考答案

正确答案:E
解析:ThebestanswerisE,theonlychoiceNOTsupportedbythepassage.Lines37-38supporttheideathat“truebacteriaindeedform.alargecoherentgroup”ofthekindpostulatedbythetwo-categoryhypothesis-that,thattheyarea“distinctevolutionarygroup”(choiceA).Lines38-40assertthat“archaebateria…areprokaryotesand…resembletruebacteria,”asBstates.Lines10-13supportC:“prokaryoticandeukaryoticcells..translategeneticinformation…accordingtothesametypeofgeneticcoding.”Dissupportedbylines7-10inthepassage,whichstatethat“thedistinctionbetweeneukaryotesandbacteria”was“initiallydefinedintermsofsubcellularstructuresvisiblewithamicroscope.”E,however,iscontradictedbylines25-27:“theaminoacidsequencesofvariousenzymestendtobetypicallyprokaryoticoreukaryotic.”

考点: