Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
An oxygen-binding pigment that helps store oxygen in muscle tissue.
3.
(two words, no space) The disc that separates the sarcomeres in a myofibril.
5.
The point around which a lever pivots.
6.
A rigid structure that pivots about a fulcrum, and that can either increase the force generated at the expense of speed or increase the speed generated at the expense of force.
8.
A hairlike structure found in some eukaryotes that uses a swimming motion to propel the organism or to move fluid past the organism.
10.
(two words, no space) The basic unit of muscle tissue, consisting of a collection of myofibrils.
12.
A protein found in muscle tissue and in bacterial flagella.
Down:
1.
A unit of a muscle fiber consisting of many sarcomeres attached end-to-end.
2.
(____ muscle fiber) A type of muscle fiber that is specialized for slow, sustained contraction.
4.
A unit of a myofibril consisting of an arrangement of actin and myosin filaments that extends between two Z discs.
7.
A hairlike structure found in bacteria and eukaryotes that propels organisms through the water.
9.
A protein found in muscle tissue. In the sarcomere, the heads of myosin molecules "walk" along actin filaments to cause contraction.
11.
(____ muscle fiber) A type of muscle fiber that contracts quickly, but can sustain a contraction for only a short time.