Biochemistry 1: General Overview and Amino Acids
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Questions and Answers

What is primarily studied in biochemistry?

  • The physics of chemical mixtures
  • The structure of inorganic compounds
  • The chemical processes within and related to living organisms (correct)
  • The interactions between physical forces and matter
  • Which of the following best describes an amino acid?

  • An essential fatty acid
  • A monomer used to build proteins (correct)
  • A simple carbohydrate
  • A nucleotide building block
  • What functional group is characteristic of amino acids?

  • Carboxyl group (-COOH) (correct)
  • Carbonyl group (C=O)
  • Amino group (-NH2) (correct)
  • Hydroxyl group (-OH)
  • In the context of amino acid chemistry, what role do side chains (R groups) play?

    <p>They dictate the specific properties and functions of the amino acid</p> Signup and view all the answers

    Which statement is true regarding the structure of amino acids?

    <p>Amino acids contain one central carbon atom linked to four different groups</p> Signup and view all the answers

    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.

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