Fixation of carbon is accomplished by:
a. photosynthetic organisms.
b. primary consumers.
c. decomposers.
d. bacterial decomposers.
e. burning of organic matter What will be an ideal response?
A
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Which of the following is true concerning
white muscle fibers and red muscle fibers?
a. white muscle fibers have more mitochondria b. red muscle fibers have no myoglobin c. white muscle fibers make ATP by aerobic respiration d. red muscle fibers fatigue less easily e. red muscle fibers get most of their ATP thanks to creatine phosphate
What do all of these diseases -- amoebic encephalitis, rabies, Creutzfeld-Jacob disease -- have in common?
A. They are all caused by protozoans. B. They are all transmitted through animal bites. C. Mortaility rates are all extremely high. D. There is a genetic component to all of these diseases, in addition to the infectious agent.
Of the following cell components, which is composed of protein fibers that provide shape and organization to eukaryotic cells?
A) DNA B) Mitochondria C) Golgi complex D) Chromatin E) Cytoskeleton
Which of the following is not a phase of a single muscle twitch?
A. latent period B. stimulation period C. relaxation period D. contraction period E. None of these are phases of a muscle twitch.