Manta rays, sting rays, and eagle rays are similar to lampreys in that they have cartilaginous skeletons. How are they different from lampreys?
A. They have gills.
B. They have closed circulatory systems.
C. They have bony fin lobes.
D. They have jaws.
Answer: D
Biology & Microbiology
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Fill in the blank(s) with the appropriate word(s).
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Subacute sclerosing panencephalitis is caused by a prion.
Answer the following statement true (T) or false (F)
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