Question

Question 22 2 pts Tom Hanks followed a very strict diet and exercise plan so that he could lose 55lbs of weight for his role in Cast Away where he had to look like a man who had survived on a desert island for 3 years. Much of that weight represented biological molecules (lipids, carbohydrates, proteins, and nucleic acids) that used to make up his body. As he was losing weight, where did the carbon atoms go that used to make up those biological molecules? They passed through his intestines and were defecated out (poo) They passed through his kidney as urea and were urinated out (pee) The carbon was burned and left his body as heat The bonds were rearranged and the fat molecules were turned into muscle He breathed them out as carbon dioxide molecules One if role of 2 pts Question 23

Answer 1

Discussion:- According to the law of conservation of mass:- Mass can neither be created nor be destroyed, it changes from one form to another. The weight loss occurs by oxidation of fat molecules hence major weight loss that occurs from fat molecules. The body fat gets converted (oxidized) into CO2 and H20 which are eliminated from our body via respiration, excretion, sweating, and urination.

OPTION E:- He breathed them out as CO2:- CORRECT

Reason:- Fat oxidation produces CO2 and H2Owhich are which are eliminated from our body via two ways.

CO2:- EXHALED DURING BREATHING.

H2O:- EXREATION, URINATION, SWEATING