Textbook Question
Identify each pathway as anabolic or catabolic
b. citric acid cycle
Ch.12 Food as Fuel An Overview of Metabolism
Frost4th EditionGeneral, Organic and Biological ChemistryISBN: 9780134988696
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Table of contents
- Ch.4 Introduction to Organic Compounds75
- Ch.5 Chemical Reactions19
- Ch.6 Carbohydrates Life's Sweet Molecules62
- Ch.7 States of Matter and Their Attractive Forces8
- Ch.8 Solution Chemistry Sugar and Water Do Mix4
- Ch.10 Proteins Workers of the Cell89
- Ch.11 Nucleic Acids Big Molecules with a Big Role69
- Ch.12 Food as Fuel An Overview of Metabolism65
Frost4th EditionGeneral, Organic and Biological ChemistryISBN: 9780134988696Not the one you use?Change textbook
Chapter 8, Problem 67d
Identify the type of food—carbohydrate, fat, or protein—that gives each of the following digestion products:
d. glycerol
Verified step by step guidance1
Understand the digestion process: Different types of food (carbohydrates, fats, and proteins) are broken down into specific smaller molecules during digestion. These smaller molecules are characteristic of the type of food being digested.
Recall the digestion products of fats: Fats, also known as lipids, are broken down into glycerol and fatty acids during digestion. This process is facilitated by enzymes such as lipase.
Compare glycerol to the digestion products of carbohydrates and proteins: Carbohydrates are broken down into monosaccharides (e.g., glucose), while proteins are broken down into amino acids. Glycerol is not a product of carbohydrate or protein digestion.
Identify glycerol as a digestion product of fats: Since glycerol is specifically produced when fats are digested, it is associated with fats.
Conclude that glycerol is a digestion product of fats and not carbohydrates or proteins.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Glycerol
Glycerol is a simple polyol compound that serves as a backbone for triglycerides, which are the main form of fat storage in the body. It is produced during the digestion of fats, specifically when triglycerides are broken down by enzymes. Understanding glycerol's role is essential for recognizing how fats are metabolized and utilized for energy.
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Glycerol Metabolism Concept 2
Digestion of Fats
The digestion of fats involves the breakdown of triglycerides into glycerol and fatty acids through the action of lipases. This process occurs primarily in the small intestine, where bile salts emulsify fats, making them more accessible to digestive enzymes. Recognizing this process is crucial for linking glycerol to its source, which is dietary fat.
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Macronutrients
Macronutrients are the nutrients required in large amounts for energy and bodily functions, including carbohydrates, fats, and proteins. Each macronutrient has distinct roles in metabolism and provides different digestion products. Understanding the classification of macronutrients helps in identifying which type of food corresponds to specific digestion products like glycerol.
Related Practice
Textbook Question
Identify each pathway as anabolic or catabolic.
a. gluconeogenesis
Textbook Question
Identify the type of food—carbohydrate, fat, or protein—that gives each of the following digestion products:
b. fatty acid
Textbook Question
How and where does sucrose undergo digestion in the body? Name the products.
Textbook Question
If glycolysis occurs in the cytoplasm and the citric acid cycle occurs in the mitochondrial matrix, how do the products of glycolysis get inside the mitochondrial matrix?
Textbook Question
Which of the following reactions in glycolysis produce ATP or NADH?
a. 1,3-bisphosphoglycerate to 3-phosphoglycerate