Each cell needs a full instruction manual to operate properly. DNA needs to be copied before cell division so that each new cell receives a full set of instructions. However, DNA cannot begin the process by itself. Describe how the uptake of glucose can make this process take place.

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blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.