Invertebrates include __________.
a. all animals except those in the phylum Vertebrata
b. only animals that have hydrostatic skeletons
c. all animals without backbones
d. all animals without an endoskeleton
e. only animals that have exoskeletons
Answer: c. all animals without backbones
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What type of organism uses a salp's body to live inside?
a. Larvaceans b. Amphipods c. Pyrosomes d. Tunicates
The structures labeled "B" in the figure are
a. zygospores. b. haploid spores. c. ascospores. d. gametes. e. zygotes.
The anatomical structure identified with the letter
“R” in the figure above is the a. myocardium. b. pulmonary veins. c. inferior vena cava. d. right atrium. e. heart apex.
Electrophoresis separates proteins on the basis of what factor(s)?
A.) the protein's size B.) the protein's affinity for a ligand molecule C.) the protein's cell of origin D.) the protein's net charge