Which of the following is true about the
metabolism of trans fatty acids?
a. we have evolved the enzymes to hydrolyze
trans fatty acids
b. we have enzymes to hydrolze cis fatty acids
but not trans fatty acids
c. we can metabolize about half of the trans
fatty acids we consume but no more than
that
d. we cannot metabolize either cis or trans
fatty acids
e. more than one of these is correct
B
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In humans, an increase of body temperature a few degrees above normal for a prolonged period produces a state called
____.
a. estivation b. hyperthermia c. thermal acclimatization d. hypothermia e. hibernation
The simultaneous movement of Na+ out of a cell against its concentration gradient and protons into a cell with their concentration gradient is best described as an example of
a. symport. b. passive diffusion. c. antiport. d. facilitated diffusion. e. active transport
The existence of a separate set of enzymes and DNA molecules in mitochondria and chloroplasts
provide support for serial endosymbiosis. __________________Indicate whether the statement is true or false.
Which organelle is responsible for degrading waste within the cell?
A) Golgi apparatus B) lysosome C) endoplasmic reticulum D) ribosome E) chloroplast