Which step of a muscle contraction can be described as the longest sarcomere, where actin and myosin are the least overlapped? step 1 step 2 step 3 step 4

Answer: Step 1

During step one no impulse has occurred yet. Thus, the muscle fiber is relaxed (at rest). The sarcomere is at its longest possible length due do the fact that myosin is not bound to the actin.

This step will end when the brain or spinal cord will send an impulse to the muscle. This will travel through the motor neuron and reach the neuromuscular junction. Here acetylcholine will be released, which in turn will trigger the impulse in the muscle.

true, i don't really know what you're asking but from the info you provided im guessing the answer is true.

lesson summarykaryotypes a genome is the full set of all the genetic information that an organism carries in its dna. chromosomes arebundles of dna and protein found in the nucleus of a eukaryotic cell.