Answer:
Cellular respiration uses energy in glucose to make ATP. Aerobic (“oxygen-using”) respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport. ... This results in a net gain of two ATP molecules. Life first evolved in the absence of oxygen, and glycolysis does not require oxygen.
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<em><u>Hope this helps..</u></em></h2>
Hey there!
I do believe that your answer will be choice A
Question: Many molecules are moved through the body by?
Answer:<u> The molecules are moved through the body by uses special transport proteins to move molecules across the membrane that cannot pass thorough on their own. Usually large molecules. Carrier proteins blind and carry the molecules across the cell membrane. They provide an open channel of passageway through the cell membrane for molecules to move across.</u>
<em>Hope this helps!.</em>
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<em>~A.W~ZoomZoom44</em>
