Textbook Question
What type of microorganism has a chitin cell wall, has DNA that is contained in a nucleus, and has ergosterol in its plasma membrane?
Ch. 2 - Chemical Principles
Tortora14th EditionMicrobiology: An IntroductionISBN: 9780138200398
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Table of contents
- Ch. 1 - The Microbial World and You18
- Ch. 2 - Chemical Principles20
- Ch. 3 - Observing Microorganisms Through a Microscope18
- Ch. 4 - Functional Anatomy of Prokaryotic and Eukaryotic Cells21
- Ch. 5 - Microbial Metabolism20
- Ch. 6 - Microbial Growth20
- Ch. 7 - The Control of Microbial Growth20
- Ch. 8 - Microbial Genetics19
- Ch. 9 - Biotechnology & DNA Technology20
- Ch. 10 - Classification of Microorganisms15
- Ch. 11 - The Prokaryotes: Domains Bacteria and Archaea14
- Ch. 12 - The Eukaryotes: Fungi, Algae, Protozoa, and Helminths17
- Ch. 13 - Viruses, Viroids, and Prions20
- Ch. 14 - Principles of Disease and Epidemiology21
- Ch. 15 - Microbial Mechanisms of Pathogenicity19
- Ch. 16 - Innate Immunity: Nonspecific Defenses of the Host20
- Ch. 17 - Adaptive Immunity: Specific Defenses of the Host20
- Ch. 18 - Practical Applications of Immunology20
- Ch. 19 - Disorders Associated with the Immune System19
- Ch. 20 - Antimicrobial Drugs19
- Ch. 21 - Microbial Diseases of the Skin and Eyes21
- Ch. 22 - Microbial Diseases of the Nervous System19
- Ch. 23 - Microbial Diseases of the Cardiovascular and Lymphatic Systems20
- Ch. 24 - Microbial Diseases of the Respiratory System20
- Ch. 25 - Microbial Diseases of the Digestive System20
- Ch. 26 - Microbial Diseases of the Urinary and Reproductive Systems19
- Ch. 27 - Environmental Microbiology20
- Ch. 28 - Applied and Industrial Microbiology19
Tortora14th EditionMicrobiology: An IntroductionISBN: 9780138200398Not the one you use?Change textbook
Chapter 2, Problem 9
Classify each of the molecules on the left as an acid, base, or salt. The dissociation products of the molecules are shown to help you.
NaOH → Na⁺ + OH⁻
a. Acid
b. Base
c. Salt
Verified step by step guidance1
Identify the molecule given: NaOH (sodium hydroxide).
Look at the dissociation products: NaOH dissociates into Na⁺ (sodium ion) and OH⁻ (hydroxide ion).
Recall the definitions: Acids release H⁺ ions in solution, bases release OH⁻ ions, and salts dissociate into ions that are neither H⁺ nor OH⁻.
Since NaOH releases OH⁻ ions upon dissociation, classify it as a base.
Confirm that Na⁺ is a cation from a metal and OH⁻ is the hydroxide ion, which is characteristic of bases.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Acids, Bases, and Salts Classification
Acids are substances that release H⁺ ions in solution, bases release OH⁻ ions, and salts are ionic compounds formed from the neutralization of an acid and a base. Understanding these definitions helps classify molecules based on their dissociation products.
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01:29
Acids and Bases
Dissociation in Aqueous Solutions
Dissociation refers to the process where molecules separate into ions when dissolved in water. Identifying the ions produced, such as OH⁻ or Na⁺, is key to determining whether the original molecule is an acid, base, or salt.
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02:19Homogenous vs. Heterogenous Solutions
Role of Hydroxide Ion (OH⁻) in Bases
The presence of hydroxide ions (OH⁻) in the dissociation products indicates a base. For example, NaOH dissociates into Na⁺ and OH⁻, classifying it as a strong base due to the release of OH⁻ ions.
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02:54Bases
Related Practice
Textbook Question
Draw a simple lipid, and show how it could be modified to a phospholipid.
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Textbook Question
Classify each of the molecules on the left as an acid, base, or salt. The dissociation products of the molecules are shown to help you.
H2SO4 → 2H+ + SO42⁻
a. Acid
b. Base
c. Salt
1
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Textbook Question
Classify each of the molecules on the left as an acid, base, or salt. The dissociation products of the molecules are shown to help you.
MgSO4 → Mg2+ + SO42⁻
a. Acid
b. Base
c. Salt
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Textbook Question
The following diagram shows the bacteriorhodopsin protein. Indicate the regions of primary, secondary, and tertiary structure. Does this protein have quaternary structure?
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