The following events are associated with muscle contraction. Which of the following best describes the order in which these events occur, following the initiation of a contraction by a nerve impulse? 1. Tubules transmit electrical impulses throughout muscle cell. 2. Myosin contacts actin and pulls it towards the center of the sarcomere. 3. Acetylcholine binds to receptors on the muscle. 4. Troponin-tropomyosin complex shifts to expose myosin binding sites. 5. Calcium is released from the sarcoplasmic reticulum.

(drag each tile to the correct identify which questions can be answered by what can be answered by science or which cannot. -is it right or wrong to use genetic engineering to produce new food products? -what are the most common social settings that tend to produce accomplished artists? -if a new gene is added to the genome of a tomato species, will that species be more resistant to insects? -should humans use biotechnology to bring extinct organisms from the fossil record back to life? -do the types of organisms found in the fossil record appear in consistent sequences in different parts of the world? -are michelangelo's paintings more impressive than rembrandt's?

Why do oceanic plates tend to subduction when colliding with a continental plate

Which statement describe events that occur during interphase?