Which characteristic is common to all chordates?
A) They all have vertebral columns.
B) They all exhibit radial symmetry.
C) They all have a notochord sometime during their life cycle.
D) They all have an exoskeleton sometime during their life cycle.
C) They all have a notochord sometime during their life cycle.
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Four of the five choices listed below are related by a
common number. Select the exception. a. number of nucleotides in a codon b. number of building blocks (parts) in a nucleotide c. number of STOP codons d. number of types of DNA e. number of types of RNA
Animals that possess homologous structures probably __________.
Fill in the blank(s) with the appropriate word(s).
What are bursae?
What will be an ideal response?
In the formation of common table salt, sodium and chlorine interact because:a
sodium and chlorine share a pair of electrons. b. sodium and chlorine share two pairs of electrons. c. chlorine donates seven electrons to sodium. d. there is no electron exchange. e. sodium donates one electron to chlorine.