CHEM 1205 FINAL EXAM WITH 100% CORRECT ANSWER (VERIFIED ANSWERS) | LATEST UPDATE | ALREADY GRADED A+

CHEM 1205 FINAL EXAM WITH 100% CORRECT ANSWER (VERIFIED ANSWERS) | LATEST UPDATE | ALREADY GRADED A+ How does a disaccharide form? - ANSWER -A hydroxyl group of one monosaccharide reacts with a hydroxyl group of a second monosaccharide. What is the bond called between two monosaccharides? - ANSWER -Glycosidic linkage How does hydrolysis affect a disaccharide? - ANSWER -It cleaves the C-O glycosidic linkage and forms two monosaccharides. What monosaccharides does sucrose contain? - ANSWER -Glucose and fructose What are three examples of artificial sweeteners? - ANSWER -Aspartame, Saccharine, Sucralose Where is cellulose found? - ANSWER -Cell walls of all plants Why can humans not digest cellulose? - ANSWER -Humans do not posses the enzyme to hydrolyze cellulose Is cellulose branched or unbranched? - ANSWER -unbranched What enzyme digests starch? - ANSWER -Amylase Name two examples of starch. - ANSWER -Amylose and amylopectin What is the major form of polysaccharide storage in animals? - ANSWER Glycogen What characteristic of glycogen makes it easy fro hydrolysis to occur? - ANSWER -Glycogen is highly branched so there are many ends available for hydrolysis What bonds form by joining amino acids? - ANSWER -Amide bonds What functional groups do amino acids contain? - ANSWER -Amino group and carboxyl group L-amino acids have the -NH3+ group on the _____________. - ANSWER -Left D amino acids have the -NH3+ group on the _______________. - ANSWER Right T or F? All amino acids except glycine, have a chirality center at the a-carbon. - ANSWER -True What charge do zwitterions have? - ANSWER -They are electrically neutral What is the most important property of the R-groups on amino acids? - ANSWER -Polarity What does the net charge on an amino acid depend on? - ANSWER -pH What is the isoelectric point? - ANSWER -The pH at which the majority of the molecules of a compound have no net charge. What are the 4 levels of protein structure? - ANSWER -Primary, Secondary, Tertiary, and Quaternary What is the secondary structure of a protein? - ANSWER -3D arrangement of localized regions of a protein. a-helix and B-pleated sheet What do the C=O bonds and N-H bonds look like in an a-helix? - ANSWER -C=O bonds are all pointing up N-H bonds are pointing down What do the r-groups look like in a B-pleaded sheet? - ANSWER -R-groups alternate up and down The tertiary structure is stabilized by what four different interactions? - ANSWER -Hydrogen Bonding, London Dispersion Forces, Disulfide Bonds, Electrostatic Interactions Where do metals lie on the periodic table? - ANSWER -They lie on the left side of the periodic table Where do the nonmetals lie on the periodic table? - ANSWER -All except for hydrogen lie on the right side of the periodic table. Where do metalloids appear on the periodic table? - ANSWER -In between metals and nonmetals Are nonmetals solid, liquid, or gas at room temperature? - ANSWER -They can be all of them What do metalloids look like? - ANSWER -Shiny like metals Do metalloids conduct heat/electricity? - ANSWER -No What four elements make up 96% of living matter? - ANSWER -Carbon, hydrogen, oxygen, and nitrogen What is the atomic number? - ANSWER -The number of protons in the nucleus What are isotopes of an element? - ANSWER -Atoms of the same element that have a different number of neutrons