Which of the following is correct about a muscle contraction? A.Sarcomeres produce actin and myosin. B.(Correct Response) Myosin heads attach to sites on actin filaments. C.Myofibrils attach to Z lines. D. ATP causes fascicles to contract muscle fibers.
Which structure is composed of the filaments actin and myosin? A.fascicle B.(Correct Response) myofibril C.muscle fiber D.sarcomere
Which statement is correct about how muscles move bones? A. The origin is where only flexors attach to move a nearby bone. B. Extensors cause a bone to move initially. C. Tendons connect extensors and flexors to each other. D. (Correct Answer) The insertion is where a muscle attaches to the bone it wants to move.
Most scientists believed that heredity material blended together in offspring, however, Mendel did not. he believed that an organism inherits one gene from each parent and that some alleles are dominant over others. This would mean that they would show up in the phenotype of an organism.
