Q: What sort of digestion do animals engage in? Choices: - external - essential - poison - internal A:
internal

Q: Which theory explains how materials can collide and become new materials? Choices: - pileup theory - disturbance theory - rupture theory - collision theory A:
collision theory

Q: What is the term for the basic contractile unit of the muscle? Choices: - filament - sphincter - bandimere - sarcomere A:
sarcomere