On getting signal from the brain the muscles contract as the body pulls calcium from the blood to the muscle cells. Calcium binds with troponin drawing it out of its position and tropomyosin follows troponin as these two proteins are linked together. On movement of the troponin and tropomyosin, actin and myosin activation occurs and they move towards each other thus contracting the muscle. Therefore, free calcium is required for muscle contraction.
Answer:
tRNA brings the correct amino acids to the growing amino acid chain
<span> "The process of ocean acidification is surprisingly simple. Carbon dioxide from the burning of fossil fuels accumulates in the atmosphere where it causes global warming. But it also affects the oceans. As carbon dioxide enters the ocean it reacts with sea water to form carbonic acid!"</span>
Answer:
A
Explanation:
As you move deeper into the Earth, the pressure increases. Similarly, the deeper you move into the Earth, the temperature increases. Thus, with increasing depth, the pressure and temperature are greater. Hope this helps!! :))
ibrahim
Because it is excessive richness in a body of water, due to frequent run off. It can cause death to plant and animal life due to lack of oxygen
