Autoimmune diseases result from a breakdown in the ability of the body to____
a. produce antibodies
b. produce memory cells
c. destroy major histocompatibility proteins
d. distinguish self from non-self
e. distinguish between harmless and pathogenic microorganisms
ANSWER: d
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Which of these structures is NOT derived from the neural crest?
a. bones of inner ear b. cartilage of the face c. cranial nerves d. teeth e. muscles
Four of the five organisms listed below are
heterotrophs. Select the EXCEPTION.
a. mushroom b. apple c. wolf d. clam e. parasite
Miller's apparatus was designed to
A. simulate the conditions of early Earth. B. prove how complex organic molecules originated. C. support the theory of biogenesis. D. demonstrate how the first cells originated.
Living cells are required for culturing viruses because
A) viruses are technically nonliving. B) viruses require host cell genetic machinery to replicate. C) viruses are obligate intracellular parasites. D) All of the choices are correct.