Muscle contraction occurs because:
A) myosin filaments pull on actin filaments
B) actin filaments contact and pull on myosin filaments
C) actin filaments contact the sarcoplasmic reticulum
D) myosin filaments are stimulated by acetylcholine
Correct Answer:
Verified
Q2: The _ molecule hides the myosin-binding site
Q3: A type of connective tissue,called _,stores fat.
A)adipose
Q4: Animals with the kind of body cavity
Q5: _ are chemicals secreted into the space
Q6: The outer layer of bone,referred to as
Q8: Muscle cells are unique because of the
Q9: _ is only a single cell layer
Q10: The body contains 11 different organ systems.The
Q11: _ are found in soft-bodied invertebrates,such as
Q12: The first type of symmetry to develop,and
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