Current evidence indicates that bacteria and archaea existed on earth for approximately 2 billion years before eukaryotes appeared.
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Q18: The smallest and most significant taxon is
A)genus.
B)species.
C)kingdom.
D)family.
E)phylum.
Q20: A scientist studying the sequence of nucleotides
Q25: Taxonomy does not involve
A)nomenclature.
B)classification.
C)taxa.
D)identification.
E)common name.
Q35: Which scientific field is involved in the
Q36: Which scientific name is written correctly?
A)
Q38: Most biochemical macromolecules are polymers,which are chains
Q42: What type of bonds are formed between
Q44: What part of a phospholipid forms hydrophobic
Q55: A scientist studying helminths is working with
Q55: The building blocks of an enzyme are
A)nucleotides.
B)glycerol
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