Question
B1O Muscle Cells Biological muscle cells can be thought of as nanomotors that use the chemical energy of ATP to produce mechanical work. Measurements show that the active proteins within a muscle cell (such as myosin and actin) can produce a force of about 1.5 $\mathrm{pN}$ and displacements of 8.0 $\mathrm{nm} .$ How much work is done by such proteins?
Step 1
This is represented by the formula: \[ W = F \cdot d \] where \( W \) is the work done, \( F \) is the force, and \( d \) is the displacement. Show more…
Show all steps
Your feedback will help us improve your experience
Eric Mockensturm and 81 other Physics 101 Mechanics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Kinesin and muscle myosin are both motor proteins with some shared and some distinct characteristics. Which of the following is not true? - Both are mechanoenzymes that use the chemical energy of ATP to produce mechanical forces. - Both have coiled-coil tails. - Both must execute their movement very rapidly with almost no time spent touching the filament. - Muscle myosin and kinesin walk down filaments toward their respective ends.
The ability of myosin to walk along an actin filament may be observed with the aid of an appropriately equipped microscope. Describe how such assays are typically performed. Why is ATP required in these assays? How can such assays be used to determine the direction of myosin movement or the force produced by myosin?
BIO Peristallic Work The human small intestine moves foodalong its 6.9 -m length by means of peristalsis, a contraction and relaxation of muscles that propagate in a wave along the digestive tract. If the average force exerted by peristalsis is 0.18 $\mathrm{N}$ , how much work does the small intestine do to move food along its entire length?
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD