Which of the following statements is false?
A. Shortening a muscle prior to contraction
reduces the energy consumption of that
muscle.
B. Slower contraction velocities generate
larger forces than more rapid contraction
velocities.
C. Lengthening contractions generate more
force than shortening contractions.
D. Isometric contractions occur when a
muscle generates force without changing
length.
E. Rapid and repetitive stretching of a muscle
can result in injury.
A
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Which of the following represents the true evolutionary history of a taxon?
A. monophyletic groups B. paraphyletic groups C. polyphyletic groups D. derived groups E. All of the of the answer options are correct.
Fossils of the earliest known true hominids are
approximately how many millions of years old? a. more than 20 b. about 10 c. between 5 and 2 d. less than 0.5 e. none of these
What evidence did Gause and MacArthur find for the competitive exclusion principle?
What will be an ideal response?
Which of the following statements regarding RNA is false?
A) RNA contains the sugar dextrose. B) RNA contains the nitrogenous base uracil. C) One RNA molecule can include four different nucleotides in its structure. D) RNA molecules have a sugar-phosphate backbone.