Plants always invest far more energy in growth than in defense
A. true
B. false
B
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The characteristic that makes the muscle cells unique is the relative abundance and organization of
A. collagen fibers. B. gelatinous mass. C. actin and myosin fibers. D. keratin fibers. E. fibroblast cells.
Sandra has spent quite a bit of time in the sun. UVA has led to mutations in some of her cells,
but this damage was repaired by __________.
a. DNA repair genes b. oncogenes c. tumor suppressor genes d. all of these
Which of the following statements best summarizes the first law of thermodynamics? a. Energy cannot be transferred, transformed, created, or destroyed
b. Whenever energy is transferred or transformed, entropy increases. c. An energy change is required in order to decrease entropy. d. Energy can be transferred or transformed but cannot be created or destroyed.
All chordates have (a) _____
a. backbone c. notochord b. jaws d. both jaws and notochord