All vertebrate embryos have _____ at some point during embryonic development, indicating a common evolutionary

ancestor.



a. analogous structures
b. four limb buds, a tail, and somites
c. two limb buds and a tail
d. a backbone and four limb buds
e. back vertebrae, two limb buds, a tail and somites


ANSWER: b

Biology & Microbiology

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restrict flexibility but provide excellent protection.

a. Echinoidea b. Ophiuroidea c. Crinoidea d. Holothuroidea e. Asteroidea

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Which of the following diseases results from impaired glycosphingolipid degradation?

A) heart disease B) glycosphingolipid anemia C) metabolic syndrome D) erythrocyte spherocytosis E) Tay-Sachs disease

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The notochord forms from which type of tissue?

a. ectoderm b. endoderm c. mesoderm d. chorion e. amnion

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Which of the following is mismatched?

A) Burkholderia — melioidosis B) Coxiella — Q fever C) Mycoplasma — walking pneumonia D) Chlamydophila — psittacosis E) Mycobacterium — whooping cough

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