Sharks are able to survive having high levels of urea in their cells because
a. urea stabilizes proteins.
b. urea does not affect proteins.
c. trimethylamine oxide counteracts the negative effects of urea.
d. urea counteracts the unfolding of proteins by trimethylamine oxide.
e. urea unfolds proteins that were improperly folded by trimethylamine oxide.
C
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Only ______ have a lung designed so that air can flow through them in one direction
a. a few fish b. amphibians c. birds d. mammals e. insects
Motor neurons serving smooth and cardiac muscle are part of the somatic nervous system.
a. true b. false
Explain how the field of human biochemical genetics had its beginnings partly through the persistence of a young
mother. What will be an ideal response?