What is the correct sequence of events in cross-bridge cycling?
A. Myosin cross-bridge binds to actin, the powerstroke moves the thin filament relative to the thick filament, ATP binds to myosin and cross-bridge detachment occurs, ATP is hydrolyzed and the myosin head is "cocked"
B. The powerstroke moves the thin filament relative to the thick filament, myosin cross-bridge binds to actin, ATP binds to myosin and cross-bridge detachment occurs, ATP is hydrolyzed and the myosin head is "cocked"
C. Myosin cross-bridge binds to actin, ATP is hydrolyzed and the myosin head is "cocked," the powerstroke moves the thin filament relative to the thick filament, ATP binds to myosin and cross-bridge detachment occurs
D. Myosin cross-bridge binds to actin, ATP binds to myosin and cross-bridge detachment occurs, the powerstroke moves the thin filament relative to the thick filament, ATP is hydrolyzed and the myosin head is "cocked"
E. These events can occur in any sequence without affecting muscle function.
A. Myosin cross-bridge binds to actin, the powerstroke moves the thin filament relative to the thick filament, ATP binds to myosin and cross-bridge detachment occurs, ATP is hydrolyzed and the myosin head is "cocked"
You might also like to view...
Which pair includes a phase of the cell cycle and a cellular process that occurs during that phase?
A) G1 phase, DNA replication B) G2 phase, preparation for mitosis C) S phase, cell division D) M phase, cell growth
What happens when the resting potential reaches threshold voltage?
A) Voltage-gated sodium channels close. B) Voltage-gated sodium channels open. C) The sodium-potassium pump is turned on. D) Resting potassium channels close. E) Voltage-gated potassium channels open.
Figure 13.7
Which offspring in the illustration above are homozygous recessive for both traits?
A. PPTT B. ppTT C. PpTt D. pptt E. PPtt
The lac operon is active when what is present
What will be an ideal response?