Zwitterion - Study guides, Class notes & Summaries

How can we make polymers more flexible? - ANSWER By adding a plasticiser How do plasticisers make polymers more flexible? - ANSWER They stick between the chains and keep the polymers further apart from each other, weakening the van der Waals forces and lets chains slide more easily. Uses of Kevlar - ANSWER bulletproof and used in body armour. Uses of Nylon - ANSWER commonly used in textiles. Why are polymers strong? - ANSWER Polymers are bound by van der Waals forces. The intermolecula...

BIOCHEMISTRY FINAL EXAM QUESTION WITH CORRECT HIGHLIGHTED ANSWERS 2023/2024 GRADED A+ 1. The β -pleated sheet forms when two or more peptide chain, called strands, line up side by side with the C=O and N-H bonds in the plane of the sheets A. true a. false 2. when the amino acid alanine (the R group is ـCH3) is added to a solution with a pH of 7.3 alanine become A. zwitterion B. nonpolar C. cation D. anion 3. the α amino acid have a carboxyl group with a pK around _____ and a...

T/F Foods containing high moisture content always possess high water activity. correct answers False Most bacteria will be inhibited by a water activity (aw) level of ____ or below. correct answers 0.9 Removal of water from food or decreasing water activity will_____ many enzymatic reactions and _____ correct answers Slow, inhibit T/F Glucose in its D form occurs naturally in food correct answers True T/F Monosaccharide is simple carbohydrate which contain three to nine carbon atoms ...

pKa (chapter 3) correct answers measure of the tendency of a group to give up a proton (acidity); tendency decreases tenfold as pKa increases by one unit thioester bond (1) correct answers compounds with functional group C-S-CoA-C (eg, in acetyl-CoA) zwitterion (3) correct answers dipolar ion with both positive and negative groups but overall neutral charge; can act as either an acid or base Isoelectric point (pI) (chapter 3) correct answers the characteristic pH at which the net electr...

BCH2333 - Building Blocks Part 2 (Thermodynamics, Nucleic Acids, Amino Acids & Peptides, Carbohydrates, and Lipids) Quantitation of pI - Answer- pI can be quantified by Henderson-Hasselbalch equation: (pKa^-1 + pKa^+1)/2 the average of the pKas relates to the ionization of the zwitterion pI of Proteins (polyampholytes) - Answer- Proteins contain up to hundreds of pH-responsive groups; when the net charge of protein is 0, anions balance cations and the pI is reached @pH<pI, net charg...

1) Amphiphiles - Molecules that have a polar and nonpolar end. 2) pH equation - pH=-log (H+) 3) HH equation - pH=pka +log(base form of buffer/acid form of buffer) 4) Effective buffer range of a buffer - 1 pH unit above and below the pka of the buffer 5) Zwitterion - The form of an amino acid when at neutral pH. (NH3+ end and COO- end) 6) Which amino acids exist in nature - The L isomer forms, not D 7) Does the peptide bond rotate - No 8) Orientation of most pep...

Biochemistry - Exam 1 Practice Questions & Answers 2023/2024 A+ In a bacterial cell, the DNA is in the: A) cell envelope. B) cell membrane. C) nucleoid. D) nucleus. E) ribosomes. nucleoid A major change occurring in the evolution of eukaryotes from prokaryotes was the development of: A) DNA. B) photosynthetic capability. C) plasma membranes. D) ribosomes. E) the nucleus the nucleus In eukaryotes, the nucleus is enclosed by a double membrane called the: A) cell membrane. B) nuc...

ACS Biochemistry Final Exam Questions with All Correct Answers pKa (chapter 3) - ANSWER measure of the tendency of a group to give up a proton (acidity); tendency decreases tenfold as pKa increases by one unit thioester bond (1) - ANSWER compounds with functional group C-S-CoA-C (eg, in acetyl-CoA) zwitterion (3) - ANSWER dipolar ion with both positive and negative groups but overall neutral charge; can act as either an acid or base Isoelectric point (pI) (chapter ...

pKa (chapter 3) correct answers measure of the tendency of a group to give up a proton (acidity); tendency decreases tenfold as pKa increases by one unit thioester bond (1) correct answers compounds with functional group C-S-CoA-C (eg, in acetyl-CoA) zwitterion (3) correct answers dipolar ion with both positive and negative groups but overall neutral charge; can act as either an acid or base Isoelectric point (pI) (chapter 3) correct answers the characteristic pH at which the net electr...

©THEBRIGHT EXAM STUDY SOLUTIONS 8/22/2024 12:54 PM MCAT Biochemistry Review Exam Questions And Correct Answers Amino Acid - answerDipolar compound containing an amino group and a carboxyl group Amino Group - answer-NH2 Carboxyl Group - answer-COOH Alpha Carbon - answerCentral carbon atom in amino acid Attached to amino & carboxyl groups, H atom, and side chain Side Chain - answerThe variable component of an amino acid that gives the amino acid its identity and chemical properties also...