Which of the following statements is true about Chitin
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Q: NH2 N- но-Р-О 'N' ОН ОН ОН
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Which of the following statements is true about Chitin ?
| a. |
short, branching chains of nitrogen-containing sugar monomers are linked by hydrogen bonds |
|
| b. |
found in the nucleus of |
|
| c. |
weak, translucent, and stiff structural material |
|
| d. |
polysaccharide similar to cellulose |
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- What is the chemical difference between cellulose and chitin? Select one: a. Replacement of the hydroxyl group at C5 with an acetylated amino group b. Replacement of the hydroxyl group at C3 with an acetylated amino group c. Replacement of the hydroxyl group at C4 with an acetylated amino group d. Replacement of the hydroxyl group at C2 with an acetylated amino groupmatch each type of molecule with its characteristics: a. starch b. glycogen c. fat d. nucleotide i. stores energy in plants ii. consists of a pentose sugar, phosphate, and nitrogenous base iii. 3 fatty acids attached to a glycerol iv. a branched polysaccharide in animals select one: a. a-i, b-iii, c-ii, d-iv b. a-i, b-iv, c-iii, d-ii c. a-iii, b-iv, c-iii, d-i d. a-ii, b-iv, c-iii, d-i e. a-iv, b-i, c-ii, d-iiiWhich of the following polysaccharides is the principal form of stored sugars in animals? A. Starch B. Glycogen C. Cellulose D. Chitin
- Which of the following statements concerning glycolipids is true? a. All glycolipids contain sphingosine. b. All glycolipids contain one sugar residue. c. All glycolipids contain phosphatidylglycerol. d. Some glycolipids contain ceramide, while others do not.Which of the following statements is False?a. In starch breakdown, water is formed.b. In chitin, glucoses are linked as in cellulose.c. Peptide bonds determine primary peptide structure.d. Disulfide bridges are formed by covalent bonds.Which category of macromolecule always contains lots of carbon, hydrogen, oxygen, nitrogen, andsulfur, but does not contain any phosphorus (when first synthesized)?A. polynucleotides (like ribonucleic acid)B. carbohydrates (like glucose)C. proteins (like insulin)D. lipids (like triglycerides)E. polysaccharides (like glycogen)
- A structural polysaccharide out of the following is a. all of the three polymers O b. collagen O c. myosin O d. celluloseWhich of the following statements about amino acids is true? A. Twenty two amino acids are commonly found in proteins. B. Amino acids are often linked together to form branched polymers. C. All amino acids contain an NH2 and a COOH group. D. Most of the amino acids used in protein biosynthesis have charged side chains.Which of the following makes carbohydrates unique from the other biological macromolecules? Select one: a. Long-term energy storage is provided by carbohydrates. b. Carbohydrates contain a 1:2:1 ratio of carbon to hydrogen to oxygen. c. Carbohydrates are polymers that always form a ring structure. d. The monomers in carbohydrates are held together by peptide bonds.
- Which of the following statements is true regarding cellulose? Select one: A. It is a primary structural component of plant cell walls. B. It is digestible by bacteria in the human gut. C. It is a polymer of glucose joined by α glycosidic linkages. D. It is a polymer composed of enantiomers of glucose. E. It is a storage polysaccharide for energy in plant cells.Which of the following polysaccharides is a component of the extracellular matrix and connective tissue? a. glycogen b. hyaluronic acid c. chitin d. celluloseWhat structural feature makes possible the role of cellulose in biological systems? A. Cellulose polymers are linear molecules that form strong crystalline fibers. B. Cellulose fibers contain amorphous regions that can accommodate a large amount of water C. Cellulose have B-1,4 linkages which cannot be hydrolyzed by animal enzymes. D. Both A and B E. All of these.