Which one of the following statement is false regarding digestion and absorption of food in humans? 1. Oxyntic cells in our stomach secrete the proenzyme pepsinogen. 2. Glucose and amino acids are absorbed with the help of carrier ions like Na+. 3. Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries. 4. About 30% of starch is hydrolysed by salivary amylase in our mouth. [NEET 2009]