Chitin is a major component of the
A) skeleton of mammals.
B) exoskeleton of insects.
C) body hairs of mammals.
D) skeleton in birds.
E) hydrostatic skeletons of earthworms.
Correct Answer:
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Q10: The functions of the vertebrate skeleton include
Q11: During the contraction of a vertebrate skeletal
Q12: Compared with parallel muscles, pennate muscles
A) produce
Q13: Skeletal muscle contraction begins when calcium ions
Q14: Which muscle types) is/are composed of multinucleate
Q16: Food moves along the digestive tract as
Q17: What do the calcium ions released into
Q18: All skeletal muscle fibres are
A) smooth and
Q19: Motor neurons release the neurotransmitter acetylcholine ACh),
Q20: Which of the following is the correct
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