1. What protein in a sarcomere makes up the thin
filaments?
2. Which protein in a sarcomere makes up the thick
filaments?
3. Which of the above 2 proteins binds ATP or ADP and
Pi to allow the power stroke to occur?
4. As a result of the protein binding the nucleotides, the
distances from the Z line/Z disc become shorter or
longer?
5. What protein binds calcium to allow myosin to walk
along actin in the sliding filament model? When it
binds calcium, it moves ______ out of the way so
myosin can walk along actin.
6. Compare how calcium can enter the cytoplasm 2 ways
(review cell signaling and how neurons stimulate
contraction)