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Safari File Edit View History Bookmarks Window Help saplinglearning.com Northern Arizona University CHM 360 Fall 16-McCULLOUGH: Homework 1 Wheth Each Of The F Chegg Sapling Sapling Learning I Northern Arizona University CHM 360 Fall16 MCCULLOUGH Activities and Due Dates I Homework 1: Chapter 3: Amino Acids My Assignment Attempts Score O 9/2/2016 08:00 AM A 20/100 Grade book dic Tab Print Calculator 00 Questi 3 of 10 Map 00 Sapling Learning Determine whether each of the following a acids is polar neutral, hydrophobic, positively charged, or negatively charged. Note: If you answer any part of this question incorrectly, a single red Xwill appear indicating that one or more of the phrases are sorted incorrectly. Polar neutral Hydrophobic Positively charged Negatively charged H2N-C-CH2- CH2-C-COO OOC-CH-CH C-COO lysine nonpolar amino acids aspartate Thr Previous Give Up & View Solution Check Answer Next Exit Tue 1:45 PM Q 98% partat O Logout Resources Assignment Information Available From 8/24/2016 1 55 PM 9/2/2016 08:00 AM Due Date: Late Allowed with 5% of the submissions: points possible deducted per day until 09/22/2016 08:00 AM Points Possible 100 Grade Category: Graded Description: Chapter 3: Amino Acids Policies: Homework 5 attempts No Deduction You can check your answers. You can view solutions when you complete or give up on any question You have five attempts per question. There is no penalty for incorrect answers. O eTextbook O Help With This Topic Haun Midanc Help

Explanation / Answer

There are 20 amino acids occuring in nature.The properties of these amino acids are classified according to the side chain attached either as hydrophobic,polar neutral or charged.

1) Lysine : lysine is an essental amino acid with primary amine group(NH3+) attached to it.So, it is positively charged amino acid.

2) Aspartate : Aspartate or aspartic acid is an amino acid. It contains alpha carboxylic acid(COO-). So, it is negatively charged amino acid.

3) Threonine : Threonine(Thr) contains an alpha amino group(NH3+) and an alpha carboxylic acid(COO-) and an alcohol containing side chain,due to which it is classified as Polar neutral amino acid.

4) Methionine : Methionine(Met) is an aplha amino acid. It contains an alpha amino group(NH3+) and an alpha carboxylic acid(COO-) and S-methyl thioether side chain. So,it is polar neutral amino acid.

5) Non-Polar amino acids have hydrophobic properties.

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