Review of Functional Groups | Lecture Note - Edubirdie

University:
York University
Course:
BIOL 2020 | Biochemistry
Academic year:

2023
Views:

335

Pages:

2
Author:

Nick T.

In Class Notes 2/28/23 Review Functional groups! Biochemistry - chemistry of life involving organic molecules Biomolecules have more than 1 functional group 20 amino acids 9 essential - body can't make it Proteins Polymers of amino acids amine group carboxylic acid "R" side chain R group identifies amino acid Are there any N or O present in the R group? NO YES Nonpolar Polar Mostly Hydrocarbons Chiral OH O C-C-1 must have H In Class Notes 2/28/23 Values are lower than organic H3N+ - CH2 - COOH H3N+ - CH - COO- H2N - CH2 - COO- R R positive ion Zwitterion negative ion Low pH neutral pH High pH At pH 1.5 H3N+ - C - O R OH At pH 11 H2N - C - O- R when pH = pKa pH = 7.4 H2N - C - O- R OH amines neutral

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