Cross-bridges form between _____ and _____ during muscular contraction.
A. actin, myosin
B. actin, tropomyosin
C. myosin, troponin
D. myosin, tropomyosin
E. troponin, calmodulin
A. actin, myosin
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Which muscle results in a facial expression of horror and disgust
A) platysma B) risorius C) zygomaticus minor D) zygomaticus major
Ectothermic animals:
a. are more likely to use metabolism for heat b. shun the sun during the daylight hours c. are more adapted to cold d. are more likely to use behavioral temperature regulation e. maintain their body temperature within a narrower range
How many years did it take for the world population to go from one billion to six billion?
a. 100,000 b. 1 million c. 200 d. 10,000 e. 1 billion
The commercially important unicellular protists that are used in filters, polishes, and other industrial
processes are the:a. dinoflagellates. b. euglenoids. c. apicomplexans. d. zooflagellates. e. diatoms.