Which of the following is NOT characteristic of
slow- twitch muscle fibers?
a. pale color
b. many mitochondria
c. form ATP only by aerobic respiration
d. operate during marathon runs
e. found in abundance in migrating ducks
Answer: a
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Which line in the graph represents the bag that contained a solution isotonic to the 0.6 M solution at the beginning of the experiment?
A) A B) B C) C D) D E) E
The term that best describes a symbiotic relationship in which two different microorganisms occupy the same ecologic niche but have absolutely no effect on each other is:
A) commensalism. B) mutualism. C) neutralism. D) parasitism.
One of the symptoms of global warming is a decrease in the persistence of sea ice in the Arctic, which affects polar bears by:
a. increasing their access to salmon b. reducing the portion of the year that they can reach seals c. improving the chances of survival of their young d. increasing mercury contamination in their tissues and increasing their access to salmon e. increasing risk of stranding far from shore and reducing the portion of the year that they can reach seals
Briefly describe the following types of genes: tumor-suppressor gene, proto-oncogene, and oncogene
What will be an ideal response?