Question

1:The absorption of digested fats ia quite different from other nutrients.why? 2:Generally protiens are not used as respiratory substrates.why?

Answer 1

for the 1st answer visit: courses.washington.edu/../fats.html

Answer 2

1-the fats are absorbed in 'lacteals ' because they have to be stored and not metabolised in the liver.
2-protiens are not used as respiratory substrate because they are building block of body and moreover their oxidation releases more harmful chemicals.Hence,protiens are not preffered.