Where are the methanogens found?
a. Crenarchaeota
b. Euryarchaeota
c. Korarchaeota
d. Nanoarchaeota
e. both Crenarchaeota and Euryarchaeota
B
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The process of transcription in eukaryotes ends when
a. exon shuffling mixes mRNA pieces. b. enzymes recognize a polyadenylation signal in the trailing RNA sequence. c. the RNA introns are cut out by the spliceosome. d. an enzyme adds a guanine-containing cap. e. the RNA exons are spliced together.
A cladogram can be viewed as “sets within sets” of derived traits. Which features distinguish the clade containing
mice and humans from the other clades in this cladogram?
a. multicellular with legs b. multicellular with hair c. multicellular with a backbone d. multicellular e. multicellular with a backbone, legs and hair
Deserts typically form at ____ latitude where
____. a. 30 degrees; warm dry air descends b. 60 degrees; warm dry air descends c. 0 degrees; there is intense sunlight d. 60 degrees; warm dry air ascends e. 75 degrees; rising air picks up moisture
Heritable units of information about traits are called __________.
Fill in the blank(s) with the appropriate word(s).