n order for muscle contraction to occur during exercise calcium must bind to which of the following proteins? troponin. tropomyosin. myosin. actin.

Which of the following statements accurately describes the characteristics of human skeletal muscle contraction? A) Calcium ions bind to troponin, causing movement of tropomyosin and exposing the myosin binding sites on actin B) Calcium ions bind to troponin, causing movement of tropomyosin and exposing the actin binding sites for myosin C) Calcium ions bind to actin, causing movement of tropomyosin and exposing the myosin binding sites on actin D) Calcium ions bind to tropomyosin, causing movement of troponin and exposing the myosin binding sites for actin E) Calcium ions bind to tropomyosin, causing movement of troponin and exposing the actin binding sites for myosin

When calcium ion binds to troponinQuestion 9Select one:a.active sites on the myosin are exposed.b.muscle relaxation occurs.c.myosin shortens.d.tropomyosin moves into the groove between the helical actin strands.e.actin heads will bind to myosin.

During contraction of a muscle, calcium ions bind to ______ which moves _______ out of the way. This now uncovers binding sites on the __________ myofilament. multiple choice 1troponin; tropomyosin; myosintroponin; tropomyosin; actintropomyosin; troponin; myosintropomyosin; troponin; actin 2. What molecules are attached to the myosin head from the previous cycle of movement?  multiple choice 2ATP and phosphateADP and phosphateATP and calcium ionsADP and calcium ions 3. What is released in the process of cross-bridge formation?  multiple choice 3ADPPhosphateATPCalcium ions 4. When the myosin head is moved, what is released (from the myosin head)? multiple choice 4ATPADPPhosphateCalcium ions 5. After the myosin head returns to its upright position, what occurs if calcium ions are still present? multiple choice 5Actin myofilaments move away from the M line.The entire sequence is repeated.Troponin blocks the binding sites on actin.Myosin heads will no longer bind to actin.

During muscle contraction, calcium binds to Group of answer choicestroponinactinmyosintropomyosin

During muscle contraction, calcium ions bind to ___________.Multiple Choicemyosin filamentstroponinactin filamentstropomyosin