5. Which of the following names best describes the molecule?CH2OHC=OHOH-H-OHH--OHČH,OHA. PentoseB. a-anomerC. B-anomerD. L-sugarE. ketose6. During ß-oxidation, the carbon backbone of fatty acids is converted intoА. руruvateB. acetyl groupC. glucoseD. carbon dioxideE. triglyceride7. Which of the following best describes the fatty acid 20:3n-4?A. There are 20 carbons plus three carboxyl group in the molecule.B. It is a saturated fatty acid.C. The molecule is an w4 fatty acid.D. 20:3A4.7.10,13.E. It is the abbreviation of estrogen.8. Maltose is a reducing sugar because,A. It is a monosaccharideB. It can be reducedC. It is a pentoseD. It contains a hemiacetalE. It contains furanoses9. DNA is less susceptible than RNA to alkaline hydrolysis. Which of the following is themost appropriate explanation?A. DNA is double-strand while RNA is single-stranded.B. DNA has a 2 hydrogen while RNA has a 2' hydroxyl group.C. DNA has tertiary structure while RNA does not have.D. DNA includes thymine bases while RNA includes uracil bases.E. DNA is in nucleus while RNA is not.

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Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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complete the table.
6.
a. Why is it important to eat food containing antioxidants? Write at leasttwo reactions to prove the answer. b. Write in four ways the following nucleotide sequence: ATGCA. c. Explain i. Hoogsteen pairing & ii. Hyperchromic effectiii. Epimers Iv. Mutarotaton v. Aldose vi. Anomers vii. Mutarotation
3) Which of the following is used to precipitate the nucleic acids Select one O a. Ethanol O b. Glycerol O c. Methanol O d. Ethylene
Which of the following names best describes the molecule? A. Pentose B. α-glucose C. β-fructose D. L-sugar E. ketose
5. Which class or reactions results in the making of all macromolecules: a) dehydration synthesis of monomersà polymers with the loss of an H2O with the addition of each monomer b) hydrolysis with the addition of one H2O for each reaction c) oxidation with the loss of an e- d) reduction with the gain of an e-
Penicillin G is a natural antibiotic that is useful for treating infections caused by Gram positive bacteria. What is the functional benefit of the semi-synthetic antimicrobials carbenicillin and ampicillin, generated by chemical modification of the R group so their R groups each are a bit different than the R group seen with penicillin G?
13. Which statement(s) correctly describe this disaccharide? CH2OH CH2OH A. It's the alpha anomer, and it's a reducing sugar. CH-O CH-O OH B. It's the alpha anomer, and it's a nonreducing sugar. CH CH CH CH OH C. It's the beta anomer, and it's a reducing sugar. ОН СН—СH CH-CH D. It's the beta anomer, and it's a nonreducing sugar. OH OH OH
CH2OH CH2OH 12. What type of linkage is found in this carbohydrate? CH-O CH—0 Н A. a-1,4 В. В-1,4 CH OH CH CH С. а-1,6 D. B-1,6 ОН СН—СН CH-CH CH2OH ОН E. None of these is correct.
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1. At pH 7, the net charge of lysine is A. -2 В. -1 С. О D. +1 Е. +2 2. All 20 amino acids have A. one chiral carbon В. one a-carbon C. one carboxyl group D. ionizable R group E. neutral charge at physiological pH 3. The a helix structure of a polypeptide is maintained by A. peptide bonds B. van der Waal's force C. hydrogen bonds D. ionic bonds E. disulphide bonds 4. Which side chain of the following amino acid is deprotonated at pH 9? A. Methionine B. Alanine C. Isoleucine D. Histidine Е. Тyгosine 5. How many chiral carbons are in the following sugar? А. 1 В. 2 С. 3 D. 4 Е. 5
Below is the structure of butyl alcohol. Based on the results of the experiment you just performed, predict the results of exposing beetroot cells to butyl alcohol. Explain your answer. H. H C-C-C- OH H H. H. Butyl Alcohol CIH HIC-

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5. Which of the following names best describes the molecule? CH2OH C=0 но- H- H- -OH ČH,OH A. Pentose В. а-anomer C. B-anomer D. L-sugar E. ketose