21. Which of the following types of molecules has the goneral formula (CHON A) B

Question

21. Which of the following types of molecules has the goneral formula (CHON A) B) C) lipids D) fats E) nucleic acids Use the Agure below to annwer question 22 CH OH CH,OH ?? H Ho H OH ??? 22. Each of the two molecules as pictured can be correctly described as a(n) A) monosaccharide. B) disaccharide. O polysaccharide. D) A and E) none of the above 23. Which of the following molecules does NOT contain a B-14 glycosidic linkage? A) starch B) chitin C) cellulose D) peptidoglycan E) none of the above 24. A molecule that consists of a carboxyl group attached to long hydrocarbon chain is a A) polysaccharide. B) steroid. C) protein. D) nucleotide. E) fatty acid. 25. Which of the following is TRUE for lipids? A) nonpolar B) hydrophobic C) water-soluble D) A and B E) all of the above

Explanation / Answer

21. Option a is correct. It is the general formula for carbohydrates.

23. Option a is correct. Starch have  ?-1,4-glycosidic bonds.

24. Option E is correct. Fatty acids contain a carboxyl group attached to a long hydrocarbon chain.

25. Option D is correct. Lipids are both non-polar and hydrophobic

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