The answer is (b.) ATP and calcium
ATP (Adenosine triphosphate) and Calcium participates in the muscle movement. In a muscle contraction, Calcium ions are released to initiate upon the depolarization of the membrane which is induced by nerve impulses. While the ATP is required to the shortening of actin and myosin filament crossbridges.
the gymnosperms like fern have seeds on the leafs, i guess
Answer:
A large glucose molecule requires facilitated diffusion but an oxygen molecule does not is a semipermeable membrane
Explanation:
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According to theories concerning the origin of life, the atom is likely choice for the basic element of all living things because it :
B. Is relatively stable and can form four covalent bonds
This bonds will signify stability.
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You should be taking 300 milligrams a day unless you have some sort of heart disease take 200 or less
