Which of the following accurately describes the way in which a muscle moves? a. when actin filaments are pulled toward the center of the sarcomere, the fiber shortens. b. during contraction, cross-bridges pull the myosin to the center of the sarcomere. c. interaction and attachment between myosin and actin cause a muscle fiber to relax. d. no atp is needed is the contraction of a muscle.

1-octodecyl-3-methylimidazolium tetrafluoroborate/ACIL00075 can be provided in Alfa Chemistry. We are dedicated to provide our customers the best products and services.http://www.alfa-chemistry.com/1-octodecyl-3-methylimidazolium-tetrafluoroborate-item-296258.htm

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .