Which<br/>of the following descriptions is incorrect? ( ) A: Under<br/>the condition of usual diet, body mainly produces acid substances B: The<br/>salts of organic acid contained in vegetables and fruits are the main<br/>source of fix acid C: Ammonia<br/>produced by metabolism is alkali (base) D: The<br/>more protein one ingests, the more fix acid is produced E: Ketone<br/>body includes volatile component

Which compounds can function as N-source? A: NH4+ B: NO3- C: Urea (CH4N2O) D: All of the above

Which of the following statements are TRUE about patients with gout？ A: Male blood uric acid> 420 μg/L, female blood uric acid > 350 μg/L B: Tophi are found C: Sodium urate crystals are found in the joint fluid or sodium urate deposition is found in the tissue D: There are more than two typical attacks (sudden onset, severe pain in the night and relief during the day, limited to the distal end of the lower limbs) and treated with colchicine, relief within 2 days

The composition of primary urine does not include:() A: glucose B: amino acid C: electrolyte D: urea E: macromolecular protein

Phenolic compounds are secondary metabolites synthesized through the shikimic acid and phenylpropanoid pathways.（）