12/1 8. Whkh of the C. acidie A monpolar B.pola D. none of these on the outside

Question

12/1 8. Whkh of the C. acidie A monpolar B.pola D. none of these on the outside of the bilayer and both hydrophobic tails are on the inside of the bilayer of the bilayer and both hydrophobic tails are on the outside of the bilayer the fellese ing dessrihes the distribution of the polar and nonpolar portions of lipids in the lipid bilaye? A. Both outside of the bilayer consist of alternating polar heads and nonpolar tails and B. Both polar heads are C. Both polar heads are on D. Some polar heads are on the in side of the bilayer and some are on the outside; the hydropbobie tails are similarty distributed 1Q Lipid membranes have how many layers? (ce..a-i cede AB. C2 D.3 eRocenten hAve 11. Which of the following amino acikds in not optically active Which or to following amino acids does n)at Hint: Useful information- Appendix 2 A. typtophan B. glycine C. alanine D. None of these, they are all optically active. 12. Which of the following is true of the unsaturated fatty acids found in triglycerides? A. The double bond generally has the cis configuration. B. The double bond generally has the trans configuration. C. There are approximately equal number of cis and trans arrangements. D. They always contain more than one double bond. 13. Which of the following explains the insolubility of lipids in water? A. The polar and nonpolar portions of lipids are of comparable size. B. The polar portion of lipids is much larger than the nonpolar portion. C. Lipids are polar molecules. D. The polar portion of lipids is much smaller than the nonpolar portion. 14. How many different amino acids are commonly found in proteins? A. 10 C. 200 B. 1000 D. 20 15. Which of the following is not a component of a nucleotide? A. a monosaccharide B. a disaccharide C. a phosphate D. a base 16.which ofthe following blocks the receptor sites for acetylcholine? AnsweR= A. opiate CJcurare B. nicotine D. none of these Copyright Cengage Leaming. Powered by Cognero.

Explanation / Answer

8. A

The non polar side chain consist mainly of hydrocarbon and are incapable of participating in hydrogen bonding. Hence, they are hydrophobic.

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