carbohydratesandlipidstest (1)

carbohydratesandlipidstest (1) - Exam...

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Unformatted text preview: Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Which of the following structural features is common to cellulose, chitin, and peptidoglyca n? 1) _______ A) They are all compo B) They all form highly branched fibers. D) They can all form bonds between polymer chains that create parallel strands. What is the major structural difference between starch and glycogen? 2) _______ A) the type of glycos B) the types of monosaccharide subunits in the molecules D) whether glucose is in the or form Why do endurance athletes practice "carbohydrat e loading," meaning to eat massive amounts of starch in the days leading up to a long race? 3) _______ A) Starch provides dietary B) Carbohydrates are reduced molecules that can provide the chemical energy required during exercise. D) Starch can be used to synthesize cellulose and build up the cell walls of muscles. Peptidoglyca n forms sheets that stiffen the cell walls of bacteria. How is the formation of sheets possible? 4) _______ A) The polysa B) Individual strands are joined by peptide bonds a type of covalent bond. D) The glycosidic linkages between monosaccharides in peptidoglycan are extraordinarily strong. Which of the following best explains why "carbs" (carbohydrat es) are advertised by manufacture rs of candy bars and sports drinks as a "quick energy boost"? 5) _______ A) The energy in them c B) The carbons in carbs are rich in energy because they are highly oxidized. D) This is an advertising gimmick that has no scientific evidence to support it. Which of the following do starch and cellulose have in common? 6) _______ A) the type of glycos B) the size of their monosaccharide subunits D) their main function in plants If you were going to develop a new antibiotic, you would probably need to become an expert on which of these carbohydrate s? 7) _______ A) peptidoglycan B) starch D) chitin E) glycogen When an insect is crushed, it creates a crunching sound. What carbohydrate is the most likely source of this sound? 8) _______ A) glycogen B) chitin D) cellulose E) peptidoglycan Why do plants require sunlight? 9) _______ A) Sunlight energy can be B) Sunlight can be used directly by plants to perform a number of physiological processes. D) Sunlight helps plants break down their food products so they can extract the energy stored in them. Which of the following molecules would you expect to have the most free energy per gram? 10) ______ A) one with hydrogen and ox B) one with carbon, hydrogen, and oxygen atoms only D) one with a variety of atoms that are found in cells How do the and forms of glucose differ? 11) ______ A) Their ring struct B) Their linear structures differ in the location of a hydroxyl group. D) The...
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carbohydratesandlipidstest (1) - Exam...

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