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Helicase breaks hydrogen bonds of the DNA helix. Therefore it “unzips” the DNA helix and separates the strands for free complementary RNA strands which use the strands as a template during replication.
The ultimate source of energy (for most ecosystems) is the sun<span>. The ultimate fate of energy in ecosystems is for it to be lost as heat. Energy and nutrients are passed from organism to organism through the food chain as one organism eats another.</span>
Answer:
in physiology respiration is the movement of oxygen from the outside environment to the cells with tissues and the removal of carbon dioxide in the opposite direction .. in contrast exhalation is usually a passive process
<em><u>hop</u></em><em><u>e</u></em><em><u> it's</u></em><em><u> helpful</u></em>