Textbook Question
Compare the structures of vitamin A and vitamin C. Which one is water-soluble and which is fat-soluble? What structural features does each have that make one water-soluble and the other fat-soluble?
Ch.19 Enzymes and Vitamins
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
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Table of contents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Not the one you use?Change textbook
Chapter 19, Problem 21
Vitamins are a diverse group of compounds that must be present in the diet. List four functions of vitamins in the body.
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Vitamins act as coenzymes or cofactors, which are molecules that assist enzymes in catalyzing biochemical reactions. For example, vitamin B-complex vitamins are essential for energy metabolism.
Vitamins play a role in maintaining healthy vision, skin, and immune function. For instance, vitamin A is crucial for vision and immune system support.
Vitamins are involved in the synthesis and repair of tissues. For example, vitamin C is necessary for the production of collagen, a protein that helps maintain the structure of skin, blood vessels, and connective tissues.
Vitamins help protect the body from oxidative damage. For instance, vitamins like vitamin E and vitamin C act as antioxidants, neutralizing free radicals that can damage cells and tissues.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Essential Nutrients
Vitamins are classified as essential nutrients, meaning they are necessary for various bodily functions but cannot be synthesized in sufficient quantities by the body. They must be obtained through diet, highlighting their importance in maintaining health and preventing deficiencies.
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Intro to Lipids Concept 2
Biochemical Functions
Vitamins play critical roles in biochemical processes, including acting as coenzymes or precursors for enzyme function. For example, B vitamins are vital for energy metabolism, while vitamin K is essential for blood clotting, illustrating their diverse roles in maintaining physiological balance.
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Antioxidant Properties
Certain vitamins, such as vitamins C and E, function as antioxidants, protecting the body from oxidative stress caused by free radicals. This protective role is crucial for reducing the risk of chronic diseases and supporting overall cellular health.
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Related Practice
Textbook Question
Based on the structure shown for retinol (vitamin A) and the names of the two related forms of vitamin A, retinal and retinoic acid, what do you expect to be the structural differences among these three compounds?
Textbook Question
Answer questions (a)–(e) concerning the following reaction:
b. Since hydrogens are removed, the enzyme belongs to what subclass of the enzyme class from part (a)?
Textbook Question
Which vitamin provides us with each of the following?
b. Coenzyme A
Textbook Question
Answer questions (a)–(e) concerning the following reaction:
a. The enzyme involved in this reaction belongs to what class of enzymes?
Textbook Question
Answer questions (a)–(e) concerning the following reaction:
c. What is the substrate for the reaction as written?