What is a chemical defense associated with the first line?
Sweat
O Mucus
O Tears
O
Saliva
O All of the above

D

Explanation:

i just learned this not to long ago hope it helped

he is very short, and he can only reach halfway up on the elevator buttons. but on a rainy day, he has his umbrella with him, and he uses it to poke the button at the top.

after a the power stroke, adp is released, but the cross-bridge formed is still in place. atp then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site.