What do sea stars and mollusks have in common?
a. an internal skeleton
b. an exoskeleton
c. a skeleton that transmits force
d. a skeleton containing chitin
e. they both undergo molting
C
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The process by which soil bacteria convert NH3 or NH4 to nitrate (NO3-) is called
A. assimilation. B. denitrification. C. Decomposition. D. nitrification. E. ammonification.
Your father is heterozygous for the recessive disorder phenylketonuria (PKU). You know your mom
has two "good" alleles. What is the probability that you will have the disorder?
a. 0% but you will have a 50% chance of passing the "bad" allele on to your children b. 0% and you don't need to worry about passing the "bad" allele on to your children c. 25% for you and 25% for your children d. 50% for you and 50% for your children e. 50% for you and 25% that you'll pass the "bad" allele on to your children
Which process accounts for the movement of solid particles (such as food) into some animal cells?
A) Phagocytosis B) Osmosis C) Active transport D) Facilitated diffusion E) Simple diffusion
White patches on the surface of the tongue and the oral mucosa accompanied by inflammation and swelling are signs consistent with
A) zygomycosis. B) cryptococcosis. C) paracoccidioidomycosis. D) sporotrichosis. E) candidiasis.