(b)
a student has eaten a steak for dinner. the steak contains protein and fat.
(i)
describe how the protein is digested.

The protein is digested by breaking up all of the fatty acids and then transferring it the the stomach then the protein is used to repair muscle or stored as energy or fat

digestion of protein starts from the stomach, absorbs in the jejenuim after pancreatic juice (pepsin and renin) and bile have finished working on it. Its digestion ends in the ileum which is the final stage of the small intestine

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs