Antibodies from animals such as horses constitute artificially acquired passive immunity.
Indicate whether the statement is true or false.
Answer: True
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Smooth muscle cells are activated when Ca2+binds to:
A. calmodulin. B. troponin. C. tropomyosin. D. myosin kinase. E. myosin.
Over evolutionary time, flowering plants have evolved colors, odors, and nectar that attract pollinating insects and the
insects have evolved mechanisms that detect the changes in plants and to better collect pollen. This is an example of ____.
a. allopatric speciation b. phylogenetic change c. coevolution d. a key innovation e. sympatric speciation
An organism that invests more energy in reproduction will likely ______________.
a. live longer b. die earlier c. be unaffected by this decision d. I don't know the answer
Jogging is considered appropriate exercise for the obese individual.
a. true b. false