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Questions and Answers
What is primarily studied in biochemistry?
What is primarily studied in biochemistry?
Which of the following best describes an amino acid?
Which of the following best describes an amino acid?
What functional group is characteristic of amino acids?
What functional group is characteristic of amino acids?
In the context of amino acid chemistry, what role do side chains (R groups) play?
In the context of amino acid chemistry, what role do side chains (R groups) play?
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Which statement is true regarding the structure of amino acids?
Which statement is true regarding the structure of amino acids?
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Study Notes
Biochemistry 1: General Overview
- Biochemistry is the study of the chemistry of life, coined by Neuberg in 1903
- Includes the study of the chemical composition of living matter and the processes sustaining life
- Biochemistry overlaps biology, genetics, immunology, microbiology, physiology, and pharmacology
- Key issues include the structure of biomolecules, interaction between molecules, biosynthesis/degradation of molecules, energy conservation, and biological organization
Amino Acid Chemistry
- Amino acids are organic compounds with both an amino group (-NH₂) and a carboxyl group (-COOH)
- They are the building blocks of proteins, comprising about two-thirds of the cell's total dry weight
- 20 standard amino acids are the primary components of most proteins
- Amino acids differ in their side chains (R groups), determining their properties
- The alpha (α) carbon is asymmetric, bonded to a hydrogen atom, a carboxyl group, an amino group, and a variable R group
- Amino acids exist in zwitterionic forms at physiological pH
Classification of Amino Acids
- Based on polarity and chemical structure of their side chains (hydrophobic, polar, and charged groups)
- Based on catabolic end products (glucogenic, ketogenic)
- Based on biosynthetic precursors (e.g. X-ketoglutarate, oxaloacetate, pyruvate)
- Based on nutritional importance (essential vs. nonessential)
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Description
Explore the fascinating world of biochemistry, focusing on the chemical processes that sustain life. This quiz covers the fundamental concepts of amino acids, their structure, and their role as building blocks of proteins. Dive into the key interactions and organizational principles underlying biomolecules in living organisms.