What is an acid? select all that apply. ( more than 1 answer )
a. a substance that releases hydrogen ions in water
b. a substance that releases hydroxide ions in water
c. a substance that tastes sour
d. a substance that tastes bitter
e. a substance with a ph below 7

Do the following statements describe actin, myosin, both of the proteins or neither of the proteins? (a) contains a binding site for calcium (b) found in the i band (c) exists in a globular (g) form and a filamentous (f) form (d) contains a binding site for atp (e) is a component of the thin filament (f) is a component of the thick filament