eukaryotic species and those of enzymes in
archaebecterial species
5. If the “new techniques” mentioned in line 31 were
applied in studies of biological classifications other than
bacteria, which of the following is most likely?
(A) Some of those classifications will have to be
reevaluated.
(B) Many species of bacteria will be reclassified
(C) It will be determined that there are four main
categories of living things rather than three.
(D) It will be found that true bacteria are much older
than eukaryotes.
(E) It will be found that there is a common ancestor of
the eukaryotes, archaebacteria, and true bacteria.
6. According to the passage, researchers working under the
two-category hypothesis were correct in thinking that
(A) prokaryotes form a coherent group
(B) the common ancestor of all living things had complex
properties
(C) eukaryotes are fundamentally different from true bacteria
(D) true bacteria are just as complex as eukaryotes
(E) ancestral versions of eukaryotic genes functioned
differently from their modern counterparts.
7. 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