Zwitterion Study guides, Class notes & Summaries
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Biochemistry Test 1 Questions and Answers Graded A+
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Biochemistry Test 1 Questions and Answers Graded A+ biochemistry a discipline in biochemistry; is the description of molecules in biology/chemistry of proteins 
molecular biology a discipline in biochemistry; the manipulation of DNA, genetics 
cell biology a discipline in biochemistry; larger scale, functions and mechanisms within a cell/cell energetics 
cellulose a natural polymer; found in plants for storage 
glycogen a natural polymer; found in animals for storage 
protein a natural polymer; ...
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ACS Biochemistry Final (100% Correct Answers)
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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...
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Biochemistry Chapter 4 Test Bank Questions
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The net charge of the zwitterion form of Gly is ___ - Zero 
When a peptide bond is formed, an ___ reacts with a carboxylate group - Amino Group 
At a pH above the pKa, the phenol group of tyrosine is - Deprotonated 
In the tripeptide Lys-Pro-Ile, there are ___ charged groups at pH 7 - Three 
at a pH below the pKa, the ε-amino group of lysine is - Protonated 
at a pH below the pKa, the β-carboxylate group of Asp is ___ - uncharged; Protonated 
In the peptide Trp-Ser-Val, valine is at the - C-te...
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Biochemistry Chapter 4 Test Bank Questions
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The net charge of the zwitterion form of Gly is ___ - Zero 
When a peptide bond is formed, an ___ reacts with a carboxylate group - Amino Group 
At a pH above the pKa, the phenol group of tyrosine is - Deprotonated 
In the tripeptide Lys-Pro-Ile, there are ___ charged groups at pH 7 - Three 
at a pH below the pKa, the ε-amino group of lysine is - Protonated 
at a pH below the pKa, the β-carboxylate group of Asp is ___ - uncharged; Protonated 
In the peptide Trp-Ser-Val, valine is at the - C-te...
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Biochemistry Chapter 4 Test Bank Questions
- Other • 9 pages • 2022
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The net charge of the zwitterion form of Gly is ___ - Zero 
When a peptide bond is formed, an ___ reacts with a carboxylate group - Amino Group 
At a pH above the pKa, the phenol group of tyrosine is - Deprotonated 
In the tripeptide Lys-Pro-Ile, there are ___ charged groups at pH 7 - Three 
at a pH below the pKa, the ε-amino group of lysine is - Protonated 
at a pH below the pKa, the β-carboxylate group of Asp is ___ - uncharged; Protonated 
In the peptide Trp-Ser-Val, valine is at the - C-te...
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Biochemistry - Exam 1 Practice Questions & Answers 2023/2024 A+
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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...
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Biochemistry Test 1 questions and answers
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Biochemistry Test 1 questions and answers 
biochemistry 
a discipline in biochemistry; is the description of molecules in biology/chemistry of proteins 
 
 
 
molecular biology 
a discipline in biochemistry; the manipulation of DNA, genetics 
 
 
 
cell biology 
a discipline in biochemistry; larger scale, functions and mechanisms within a cell/cell energetics 
 
 
 
cellulose 
a natural polymer; found in plants for storage 
 
 
 
glycogen 
a natural polymer; found in animals for storage 
 
 
 
p...
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AQA A Level Chemistry 2022 Paper 2 SOLUTION 2023//2024
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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...
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Test Bank for Lehninger Principles of Biochemistry 7th Edition by Nelson (complete, questions/answers/rationales)
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The chirality of an amino acid results from the fact that its α carbon: 
A) has no net charge. 
B) is a carboxylic acid. 
C) is bonded to four different chemical groups. 
D) is in the L absolute configuration in naturally occurring proteins. 
E) is symmetric. 
C) is bonded to four different chemical groups. 
 
 
 
Of the 20 standard amino acids, only ___________ is not optically active. The reason is that its side chain ___________. 
A) alanine; is a simple methyl group 
B) glycine; is a hydrog...
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ACS BIOCHEMISTRY FINAL EXAM QUESTIONS WITH CORRECT DETAILED ANSWERS 2023
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ACS BIOCHEMISTRY FINAL EXAM QUESTIONS WITH CORRECT DETAILED ANSWERS 2023
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