Given these events: 1. active sites on actin myofilament are exposed 2. actin myofilament slides over myosin myofilament 3. Ca2+ ion binds to troponin 4. myosin heads move 5. cross bridges form Choose the arrangement that lists the correct order in which they occur during a single stimulation of a skeletal muscle. A. 4,3,2,1,5 B. 3,1,5,4,2 C. 3,2,5,4,1 D. 2,4,3,5,1 E. 1,2,3,4,5

          Given these events:
1. active sites on actin myofilament are exposed
2. actin myofilament slides over myosin myofilament
3. Ca2+ ion binds to troponin
4. myosin heads move
5. cross bridges form
Choose the arrangement that lists the correct order in which they occur during a single stimulation of a skeletal muscle.
A. 4,3,2,1,5
B. 3,1,5,4,2
C. 3,2,5,4,1
D. 2,4,3,5,1
E. 1,2,3,4,5

Given these events:
1. active sites on actin myofilament are exposed
2. actin myofilament slides over myosin myofilament
3. Ca2+ ion binds to troponin
4. myosin heads move
5. cross bridges form
Choose the arrangement that lists the correct order in which they occur during a single stimulation of a skeletal muscle.
A. 4,3,2,1,5
B. 3,1,5,4,2
C. 3,2,5,4,1
D. 2,4,3,5,1
E. 1,2,3,4,5

Added by Eric F.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

Instant Answer

Solved by Expert Emily Himsel

12/01/2022

Step 1

This is necessary for the exposure of active sites on actin myofilament (event 1). So, the correct order must start with event 3 followed by event 1. Show more…

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Given these events: 1. Active sites on actin myofilament are exposed. 2. Actin myofilament slides over myosin myofilament. 3. Ca2+ ion binds to troponin. 4. Myosin heads move. 5. Cross bridges form. Choose the arrangement that lists the correct order in which they occur during a single stimulation of a skeletal muscle. A. 4, 3, 2, 1, 5 B. 3, 1, 5, 4, 2 C. 3, 2, 5, 4, 1 D. 2, 4, 3, 5, 1 E. 1, 2, 3, 4, 5