Answer:
it is true. Watersheds can be as small as a footprint or large enough to encompass all the land
Answer: It will affect muscle contraction because it is needed for the formation of muscle contraction cross-bridge.
Explanation: During muscle contraction calcium binds to troponin, a protein complex that regulates muscle contraction by exposing the binding site of actin filament. Actin filament active site is where myosin head binds to, creating a cross-bridge using enzyme ATPase to speed the reaction. Calcium ion are needed to activate troponin movement, otherwise it stays in its inactive form blocking the active site of actin filament. Without calcium ions, troponin will not move and there will be no muscle contractions.
Answer: I think it is true! Sorry of it is wrong :)
Just google his theory becasue we are not allowed to copy and paste sorry that i couldnt be off assistance
