Calcium ions released from a muscle cell's endoplasmic reticulum allow myosin heads to
A. bind to actin.
B. release actin.
C. recock.
D. pivot and pull on actin.
Answer: A
Environmental & Atmospheric Sciences
You might also like to view...
You are hiking in the desert. Just when you think you have run out of water, you see a cool spring. As you sip from the spring you are thinking:
A) "I may die from drinking this salt water." B) "Interesting. . . this spring is where the water table meets the land surface." C) "This spring is a clue that rain has recently fallen here." D) "This spring is a source of point pollution."
Environmental & Atmospheric Sciences
Compare and contrast the various groups of dinosaurs. Provide examples of each group. What will be an ideal response?
Environmental & Atmospheric Sciences
Define soil degradation and discuss the processes leading to it
Environmental & Atmospheric Sciences
Most volcanic ash consists of curved shards of glass
a. True b. False
Environmental & Atmospheric Sciences