A 75kG PERSON DOING LIGHT WORK REQUIRES ABOUT 3000 kCALOFFOOD ENERGY PER DAY, 40

Question

A 75kG PERSON DOING LIGHT WORK REQUIRES ABOUT 3000 kCALOFFOOD ENERGY PER DAY, 40% OF WHICH IS ACTUALY USED BY BODY CELLS.THE OTHER 60% IS LOST AS HEAT AND IN WASTE PRODUCTS.BEFORE BEING USED BY THE CELLS, EFFECTIVELY ALL OFTHIS ENERGY IS STORED IN ATP, WHICH IS THEN CLEAVED INTO ADPAND PO 3-2, WITH THE RELEASEOF 12.5Kcal PER MOLE OF ATP. A) HOW MANY MOLECULES OF ATP ARE TURNED OVER PER DAYIN THISFASHION? WHAT MASS OF ATP DOES THIS CORRESPOND TO? THE MOLECULARWEIGHT OF ATP IS 507 g/MOL. B) THE BODY ACTUALLY CONTAINS APPROXIMATELY 5g ATP. ESTIMATETHE AVERAGE RECYCLE TIME FOR AN ATP MOLECULE. YOU SEE THAT IS MUCHMORE EFFECIENT TO REUSE ADP RATHER THAN TO SYNTHESIZE IT DENOVO. A 75kG PERSON DOING LIGHT WORK REQUIRES ABOUT 3000 kCALOFFOOD ENERGY PER DAY, 40% OF WHICH IS ACTUALY USED BY BODY CELLS.THE OTHER 60% IS LOST AS HEAT AND IN WASTE PRODUCTS.BEFORE BEING USED BY THE CELLS, EFFECTIVELY ALL OFTHIS ENERGY IS STORED IN ATP, WHICH IS THEN CLEAVED INTO ADPAND PO 3-2, WITH THE RELEASEOF 12.5Kcal PER MOLE OF ATP. A) HOW MANY MOLECULES OF ATP ARE TURNED OVER PER DAYIN THISFASHION? WHAT MASS OF ATP DOES THIS CORRESPOND TO? THE MOLECULARWEIGHT OF ATP IS 507 g/MOL. B) THE BODY ACTUALLY CONTAINS APPROXIMATELY 5g ATP. ESTIMATETHE AVERAGE RECYCLE TIME FOR AN ATP MOLECULE. YOU SEE THAT IS MUCHMORE EFFECIENT TO REUSE ADP RATHER THAN TO SYNTHESIZE IT DENOVO.

Explanation / Answer

75kG PERSON DOING LIGHT WORK REQUIRES ABOUT 3000 kCALOFFOOD ENERGY PER DAY, 40% OF WHICH IS ACTUALY USED BY BODY CELLS.THE OTHER 60% IS LOST AS HEAT AND IN WASTE PRODUCTS.BEFORE BEING USED BY THE CELLS, EFFECTIVELY ALL OFTHIS ENERGY IS STORED IN ATP, WHICH IS THEN CLEAVED INTO ADPAND PO 3-2, WITH THE RELEASEOF 12.5Kcal PER MOLE OF ATP. A) HOW MANY MOLECULES OF ATP ARE TURNED OVER PER DAYIN THISFASHION? WHAT MASS OF ATP DOES THIS CORRESPOND TO? THE MOLECULARWEIGHT OF ATP IS 507 g/MOL. B) THE BODY ACTUALLY CONTAINS APPROXIMATELY 5g ATP. ESTIMATETHE AVERAGE RECYCLE TIME FOR AN ATP MOLECULE. YOU SEE THAT IS MUCHMORE EFFECIENT TO REUSE ADP RATHER THAN TO SYNTHESIZE IT DENOVO.

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