Textbook Question
How do chylomicrons differ from VLDL?
Ch.15 Lipids
Timberlake13th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9780134421353
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Table of contents
- Ch.1 Chemistry in Our Lives11
- Ch.2 Chemistry and Measurements80
- Ch.3 Matter and Energy54
- Ch.4 Atoms and Elements51
- Ch.5 Nuclear Chemistry42
- Ch.6 Ionic and Molecular Compounds57
- Ch.7 Chemical Quantities and Reactions41
- Ch.8 Gases29
- Ch.9 Solutions51
- Ch.10 Acids and Bases and Equilibrium65
- Ch.11 Introduction to Organic Chemistry: Hydrocarbons78
- Ch.12 Alcohols, Thiols, Ethers, Aldehydes, and Ketones83
- Ch.13 Carbohydrates54
- Ch.14 Carboxylic Acids, Esters, Amines, and Amides90
- Ch.15 Lipids61
- Ch.16 Amino Acids, Proteins, and Enzymes84
- Ch.17 Nucleic Acids and Protein Synthesis83
- Ch.18 Metabolic Pathways and ATP Production67
Timberlake13th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9780134421353Not the one you use?Change textbook
Chapter 15, Problem 57
Which of the following are steroid hormones?
a. cholesterol
b. cortisol
c. estradiol
d. testosterone
Verified step by step guidance1
Step 1: Understand the definition of steroid hormones. Steroid hormones are a class of hormones derived from cholesterol. They are characterized by their four-ring structure and are involved in various physiological processes such as metabolism, immune response, and reproduction.
Step 2: Analyze the given options. The options provided are cholesterol, cortisol, estradiol, and testosterone. Determine which of these are steroid hormones by identifying their chemical structure and biological role.
Step 3: Evaluate cholesterol. Cholesterol is a precursor molecule for steroid hormones but is not itself a hormone. It is used by the body to synthesize steroid hormones such as cortisol, estradiol, and testosterone.
Step 4: Evaluate cortisol, estradiol, and testosterone. Cortisol is a glucocorticoid hormone involved in stress response and metabolism. Estradiol is an estrogen hormone involved in reproductive processes. Testosterone is an androgen hormone involved in male reproductive development. All three are steroid hormones derived from cholesterol.
Step 5: Conclude that the steroid hormones in the list are cortisol, estradiol, and testosterone. Cholesterol is not a steroid hormone but a precursor for their synthesis.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Steroid Hormones
Steroid hormones are a class of hormones derived from cholesterol, characterized by their lipid-soluble nature. They play crucial roles in regulating various physiological processes, including metabolism, immune response, and reproductive functions. Common examples include cortisol, estradiol, and testosterone, which are synthesized in the adrenal glands and gonads.
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Steroids Concept 4
Cholesterol
Cholesterol is a type of lipid molecule that serves as a fundamental building block for the synthesis of steroid hormones. While it is essential for hormone production, cholesterol itself is not classified as a steroid hormone. Instead, it is a precursor that undergoes enzymatic conversion to form various steroid hormones in the body.
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Hormonal Functions
Hormonal functions refer to the diverse roles that hormones play in the body, including regulation of metabolism, growth, and reproduction. Steroid hormones, in particular, can influence gene expression by binding to specific receptors in target cells, leading to changes in cellular activity. Understanding these functions is key to recognizing the importance of hormones like cortisol, estradiol, and testosterone in maintaining homeostasis.
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Related Practice
Textbook Question
Where are proteins located in cell membranes?
Textbook Question
How do molecules of cholesterol affect the structure of cell membranes?
Textbook Question
Why is LDL called “bad” cholesterol?
Textbook Question
What is the function of the lipid bilayer in a cell membrane?
Textbook Question
Draw the structure for cholesterol.