Proteins
u have to know that proteins are synthesized from basic units called amino acids. (think small Lego blocks forming a huge structure)
the process is called condensation.
there are 20 essential amino acids which we require for our daily body use. these amino acids molecular makeup COULD consist of those elements which you mentioned in your question.
hydrogen, carbon, oxygen and nitrogen elements are ALWAYS present in all amino acids. certain types of amino acids consist of phosphorus or even sulfur elements.
<span>A stainless steel refrigerator door, the body parts of cars, and file cabinets are magnetic because they are made of metal and magnets stick to them.</span>
They could do this by checking for a buildup of <u>lactic acid</u>.
<u>Explanation:</u>
Without oxygen glucose disintegrates in anaerobic respiration. The chemical process transmits energy to the cell from glucose. Anaerobic respiration does not contain carbon dioxide and water, but generates lactic acid. That can unintentionally lead to intense muscle cramps. Lactic acid has also been utilized as a by-product of energy metabolizing glucose and a waste product that has triggered burning muscle feeling. Research indicates, though that concentration of lactate can help alleviate the burn or muscle cramp produced throughout physical activity with higher intensity.
I see there should be an options to choose. Anyway I know the answer. Synaptic pruning refers to the <span>the downsizing of neuronal connections </span>that helps strengthen connection between neurons.