Q: Shortening of muscle fibers is called what?' Choices: - diffusion - diffusion - shrinking - contraction A:
contraction

Q: What are bacteria and archaea examples of? Choices: - fungi - plants - eukaryotes - prokaryotes A:
prokaryotes

Q: What vessels supply blood to the myocardium and other components of the heart? Choices: - specialized arteries - rapid arteries - surface arteries - coronary arteries A:
coronary arteries