Nutrients & Nutrition in Humans

2. Some protein digestion begins in the _____, while most of it occurs in the small intestine.
3. _____ are organic materials made up of the elements carbon, hydrogen, oxygen, and nitrogen. Phosphorus and sulfur may also be present.
7. At the liver, excess glucose is converted into _____ upon stimulation by insulin.
9. The _____ folds on the inner surface of the small intestine increases the rate of absorption.
10. End-products of fat digestion are fatty acids and _____.
14. _____ is the process of converting harmful substances into harmless ones by the liver cells.
17. The _____ test is carried out to test for the presence of proteins.
18. _____ acts as a solvent for chemical reactions.
19. Ethanol emulsion test is carried out to test for the presence of _____.
20. Pepsin digests proteins to _____.

1. When the circular muscles in the alimentary canal relax, the longitudinal muscles _____.
4. The small intestine has 3 parts: _____, jejunum and ileum.
5. Fats are an _____ material that prevents excessive heat loss.
6. Sucrase digests sucrose to glucose and _____.
8. _____ increases the surface area to volume ratio of fats, speeding up their digestion by lipase.
11. _____ is the rhythmic, wave-like muscular contractions of the circular and longitudinal muscles in the wall of alimentary canal.
12. Monosaccharides can be joined together to form disaccharides during _____ reaction.
13. Prolonged alcohol abuse may lead to liver _____, a disease in which the liver cells are destroyed and replaced with fibrous tissue, making the liver less able to function.
14. _____ is the process whereby large food molecules are broken down into small, soluble, simple and diffusible molecules that can be absorbed into the body cells.
15. _____ is the process whereby some of the absorbed food substances are converted into new protoplasm or used to provide energy.
16. Liver cells produce and secrete _____.