NEET 2009 Biology question

Not in NEET syllabus

Which one of the following statements is true regarding digestion and absorption of food in humans?

(1)Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like .Correct
(2)Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries.
(3)About 60% of starch is hydrolysed by salivary amylase in our mouth.
(4)Oxyntic cells in our stomach secrete the proenzyme pepsinogen.

Answer: (1)

Solution

(1) is true: in the NCERT account, fructose and some amino acids are absorbed by facilitated transport with the help of carrier ions like , while glucose and amino acids also enter by active transport. (2) is false: chylomicrons (fatty acids and glycerol packaged with proteins) are

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Question ID VK-090220