Answer:
in my opinion i think its B because it makes more sence.
Answer:
by the sarcoplasmic reticulum's calcium ion pumps
Explanation:
Rigor mortis or postmortem rigidity, is a state caused by chemical changes in the muscles that occur post mortem and cause the limbs of the corpse to stiffen.
This occurs because after death, there is no cellular respiration and consequently, no oxygen nor ATP (ATP is required for the muscle relaxation).
Calcium enters the cytosol after death because it is released due to the deterioration of the sarcoplasmic reticulum and due to the breakdown of the sarcolemma. Ca2+ ions activate the formation of actin-myosin cross-bridging necessary for the contraction. Muscles are unable to relax, because myosin heads continue to bind with the active sites of actin and there is no ATP to destabilize the myosin-actin bond.
The answer would either be emissions into the air or trash from cruise ships. But i would say the answer is emissions
<span>The nurse needs to note the outburst, and report it to her supervisor. Although this comment seems at the surface to be an admission of guilt, perhaps there are other unseen circumstances. For example, perhaps she is blaming herself for letting the child out of her sight, and the injuries were actually caused by another while the child was out of her vigilance.</span>
Your answer would be photosynthesis because photosynthesis synthesis carbon based energy molecules from chloroplast inside a cell, with the outer membrance.
hope i helped my fellow brainily user :)
