Zwitterion Study guides, Class notes & Summaries
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Amino Acids, Peptides, and Proteins
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Amino Acids Found in Proteins 
•	Amino acids contain two functional groups, an amino group (-NH2) and a carboxyl group (-COOH) which are formed on a carboxylic acid. 
o	Alpha amino acids are those where both functional groups are attached to the same carbon. 
o	Side chain/R group and hydrogen atom are also attached to alpha carbon. 
	Side chain determines the properties of amino acids and its functions. 
Terminology 
•	There are a variety of different types of amino acids, however the MCA...
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Biochemistry 8th Edition Berg Test Bank
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Biochemistry 8th Edition Berg Test Bank 
Biochemistry 8th Edition Berg Test Bank 
 
 
 
 
 
Protein Composition and Structure 
 
1)	Which of the following is most often found in proteins? 
 
A)	D-amino acids 
B)	L-amino acids 
C)	an equal amount of D- and L-amino acids 
D)	amino acids with the -carbon exclusively having an R absolute configuration 
E)	amino acids with the -carbon exclusively having an S absolute configuration 
 
Answer: B Section: 2.1 
 
 
2)	A term that describes a molecule tha...
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BIO 3100 Test Banks (A collection of the most tested Questions with Verified Answers) LATEST VERSION 2022.
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BIO 3100 Test Banks BIO 3100 Lecture Exam I-A February 14, 2008 1. Universal features of all living cells include all of the following except: (a) nucleus or nucleoid (b) plasma membrane (c) cytoplasm (d) centrosome 2. An open system is one (a) that exchanges neither matter nor energy with its surroundings plasma membrane (b) that exchanges energy but not matter with its surroundings. (c) that exchanges both matter and energy with its surroundings. (d) that exchanges matter but not energy with i...
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BIO 3100 Test Banks (A compilations of past exams, questions and verified Answers)
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BIO 3100 Test Banks 
BIO 3100 
Lecture Exam I-A February 14, 2008 
 
1.	Universal features of all living cells include all of the following except: 
(a)	nucleus or nucleoid 
(b)	plasma membrane 
(c)	cytoplasm 
(d)	centrosome 
 
2.	An open system is one 
(a)	that exchanges neither matter nor energy with its surroundings plasma membrane 
(b)	that exchanges energy but not matter with its surroundings. 
(c)	that exchanges both matter and energy with its surroundings. 
(d)	that exchanges matter but n...
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MCAT Organic Chemistry 2024 Exam Questions with Correct Answers
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Electrostatic Forces - Answer-The attractive force between electrons and the nuclei that is responsible for all molecular bonds. 
 
Coordinate Covalent Bond - Answer-One nucleus donates both of the electrons in the bond. 
 
Hybridization - Answer-sp - 180° - linear 
 
sp2 - 120° - trigonal planar 
 
sp3 - 109.5° - tetrahedral, pyramidal, or bent 
 
dsp3 - 90°, 120° - trigonal-bipyramidal, seesaw, t-shaped, linear 
 
d2sp3 - 90° - octahedral, square pyramidal, square planar 
 
When one or m...
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MCAT Organic Chemistry Exam Questions with Correct Answers
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Electrostatic Forces - Answer-The attractive force between electrons and the nuclei that is responsible for all molecular bonds. 
 
Coordinate Covalent Bond - Answer-One nucleus donates both of the electrons in the bond. 
 
Hybridization - Answer-sp - 180° - linear 
 
sp2 - 120° - trigonal planar 
 
sp3 - 109.5° - tetrahedral, pyramidal, or bent 
 
dsp3 - 90°, 120° - trigonal-bipyramidal, seesaw, t-shaped, linear 
 
d2sp3 - 90° - octahedral, square pyramidal, square planar 
 
When one or m...
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Taller 2 - Aminoácidos y Proteínas - Bioquímica - Ingeniería Bioquímica - Universidad de Antioquia
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Taller Unidad 2 Bioquímica. Tema: Aminoácidos y proteínas. Ingeniería Bioquímica - Universidad de Amtioquia. Udea. 
 
Preguntas y respuestas. Soluciones. Taller preparación examen parcial. 
 
1. Definir los siguientes términos vistos en clase 
Zwitterion 
Proteína globular 
Estructura secundaria 
Electroforesis 
Proteína fibrosa 
Carbono alfa 
Punto isoeléctrico 
Grupo prostético 
Lamina beta 
Enlace peptídico 
Apoproteína 
Alfa Hélice 
Puente disulfuro 
Enfermedad...
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BIOCHEMISTRY
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2. Side Chains determine the chemistry and function of amino acids. 
 
Nonpolar, nonaromatic - Glycine, Alanine, Valine, Leucine, Isoleucine, Methionine, and Proline 
 
Aromatic - Tryptophan, Phenylalanine, and Tyrosine 
 
Polar - Serine, Theronine, Asparagine, Glutamine, and Cysteine 
 
Negatively Charged (Acidic) - Aspartic Acid and Glutamic Acid 
 
Positively Charged (Basic) - Lysine, Arginine, and Histidine 
 
Amino Acid Chemistry - -Amphoteric 
-Protonated at low pH 
-Zwitterion at neutral...
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Biochem NBDE part I question & answers 2023 graded A+
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Biochem NBDE part I question & answers 2023 graded A+1) Amphiphiles - correct answer Molecules that have a polar and nonpolar end. 
 
2) pH equation - correct answer pH=-log (H+) 
 
3) HH equation - correct answer pH=pka +log(base form of buffer/acid form of buffer) 
 
4) Effective buffer range of a buffer - correct answer 1 pH unit above and below the pka of the buffer 
 
5) Zwitterion - correct answer The form of an amino acid when at neutral pH. (NH3+ end and COO- end) 
 
6) Which amino acids...
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AQA A Level Chemistry 2022 Paper 2 SOLUTION 2023//2024
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AQA A Level Chemistry 
2022 Paper 2 
SOLUTION 2023//2024 
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 Poly...
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