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CHEM 153A Midterm 1 SPRING 2026 UCLA
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May 2026

2025/2026

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ino acids (7 + 1 pts) a. You have a solution containing the following species at the stated concentrations. i. (2 pts) Is this a buffer system? Why or why not? ii. (3 pts) What pH is this solution at? (show your work!) b. (+1 serious bonus) If a solution of arginine was at a pH of 12.5, what would be the net (averaged across the population) charge per molecule
Oldspice
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CHEM 153A Final Exam SUMMER 2026 UCLA
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May 2026

2025/2026

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1. Amino acids and protein structure (12 pts) a. Do the following using the α-helix model provided: i. (2 pts) Notate the orientation of the N and C termini for this α-helix. ii. (2 pts) Notate the orientation of the inherent dipole moment of this α-helix iii. (1 pt) The bond labeled ‘iii’ represents a… iv. (1 pt) The bond labeled ‘iv’ represents a… b. (2 pts) Consider the polypeptide chain within a right-handed α-helix. Given the Ramachandran plot provided, what is a p...
Oldspice
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Chem 153A Verified Exam latest update Midterm 1&2 and Final 2025/2026
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December 2025

2025/2026

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Chem 153A Verified Exam latest update Midterm 1&2 and Final 2025/2026
CertifiedExaminations
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Chem 153A - Midterm 1 Exam With Complete Solutions 100% 2026||Verified Exam!!!
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December 2025

2025/2026

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Chem 153A - Midterm 1 Exam With Complete Solutions 100% 2026||Verified Exam!!!
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Chem 153A - Midterm 2 Exam With Complete Solutions 100% 2026||Verified Exam!!!
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December 2025

2025/2026

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Chem 153A - Midterm 2 Exam With Complete Solutions 100% 2026||Verified Exam!!!
CertifiedExaminations
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Chem 153a - Final Exam With Complete Solutions 100% 2026||Verified Exam!!!
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December 2025

2025/2026

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Chem 153a - Final Exam With Complete Solutions 100% 2026||Verified Exam!!!
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CHEM 153A BUNDLED QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2025/2026
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December 2025
CHEM 153A BUNDLED QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2025/2026
joshuawesonga22
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CHEM 153A Final Exam Questions with Correct Answers Latest Update 2025/2026
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December 2025

2025/2026

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CHEM 153A Final Exam Questions with Correct Answers Latest Update 2025/2026 Glucose to G6P (enzyme and process) - Answers Hexokinase. It adds a phosphate group to the glucose through metal ion catalysis (Mg2+), stabilizing (shields) the negative charges on the phosphate and allowing for nucleophilic attack by the hydroxyl, forming a bond between glucose and phosphate. G6P to F6P (enzyme and process) - Answers Phosphohexose Isomerase. The substrate (G6P) enters the enzyme active site and the ac...
joshuawesonga22
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CHEM 153A - MT 2 EXAM QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2025/2026
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December 2025

2025/2026

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Available in bundle
CHEM 153A - MT 2 EXAM QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2025/2026 compartmentalization - Answers the separation/concentration of bio-components in specified subcellular sections catalyst - Answers reduces activation energy and thus allows for reactants to get over a (lower) energy barrier cofactors - Answers non-protein components necessary for the reaction EX: metal ions transition state analogs - Answers molecules that mimic the TS but are non-reactive --> bind to enzyme a...
joshuawesonga22
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Exam (elaborations)

CHEM 153A Midterm 2 Exam Questions with Correct Answers Latest Update 2025/2026
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December 2025

2025/2026

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Available in bundle
CHEM 153A Midterm 2 Exam Questions with Correct Answers Latest Update 2025/2026 Rotate the bond of the linear sugar, tip it on its side, the hydroxyl at C5 acts as a nucleophile and attacks the carbonyl. - Answers What mechanism allows for the formation of cyclic sugars? They differ only in the newly formed chiral carbon (after ring formation). Can be α vs β. Glucose the α anomer is trans and the β anomer is cis (both pointing up!) - Answers What are anomers? Cyclization is a reversib...
joshuawesonga22
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