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Gastric glands secrete sodium bicarbonate to maintain a stable level of pH in the stomach. 

Rumen, like a mitochondrion, does not have oxygen (O2), so a glucose molecule can be totally oxidized to 6 CO2 molecules with the help of microbial enzymes.

Plant photosynthesis usually consists of two reactions, light and dark reactions. The light reaction is basically to generate ATP for the dark reaction to use to generate carbohydrates. 

An exopeptidase cleaves the peptide bonds in the middle of the amino acid chain (i.e., the middle of a protein) to form multiple peptide fragments.

Glucagon is a hormone secreted in one of the following measures by the

C16:0 (palmitic acid) is an UFA. 

Which one of the following metabolic pathways belongs to nutrient anabolism?

The small intestinal epithelia cells can readily absorb some nutrients in one of the following groups of substances. Which group is it? Oligosaccharides Polysaccharides Monosaccharides Starch Trisaccharides

Of a monogastric stomach, the 1st of the four regions is called esophageal region that can secrete mucus, HCl, and a few digestive enzymes.

After amino acid catabolism, the carbon skeletons of the following amino acids can join TCA cycle to produce energy: (A) Phenylalanine(B) Valine(C) Serine(D) Threonine(E) All of these 4 amino acids