Domanda del libro di testo
The best definition of ATP is that it is
a. A molecule stored for food use.
b. A molecule that supplies energy to do work.
c. A molecule stored for an energy reserve.
d. A molecule used as a source of phosphate.
1941
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Ch. 2 - Chemical Principles
Tortora14th EditionMicrobiology: An IntroductionISBN: 9780138200398
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TOC.tableOfContents
- Ch. 1 - The Microbial World and You18
- Ch. 2 - Chemical Principles20
- Ch. 3 - Observing Microorganisms Through a Microscope18
- Ch. 7 - The Control of Microbial Growth20
- 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
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Capitolo 2, Problema 5
Bacteria use the enzyme urease to obtain nitrogen in a form they can use from urea in the following reaction:
What purpose does the enzyme serve in this reaction? What type of reaction is this?
Guida verificata passo dopo passo1
Identify the role of the enzyme urease in the reaction. Enzymes act as biological catalysts, meaning they speed up chemical reactions without being consumed in the process.
Understand that urease specifically catalyzes the hydrolysis of urea, breaking it down into ammonia and carbon dioxide. This process helps bacteria obtain nitrogen in a usable form (ammonia).
Recognize the type of reaction catalyzed by urease. Since it involves the breakdown of a molecule (urea) by the addition of water, this is a hydrolysis reaction.
Summarize that the enzyme's purpose is to lower the activation energy of the hydrolysis reaction, allowing bacteria to efficiently convert urea into ammonia and carbon dioxide for nitrogen assimilation.
Conclude that urease facilitates a hydrolysis reaction, which is a type of catabolic reaction where a compound is split by water, enabling bacteria to access nitrogen from urea.
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Role of Enzymes in Biochemical Reactions
Enzymes are biological catalysts that speed up chemical reactions without being consumed. They lower the activation energy required, allowing reactions to proceed faster and under milder conditions. In this case, urease catalyzes the breakdown of urea to release usable nitrogen.
Video consigliato:
02:55
Enzymes
Urease and Nitrogen Metabolism
Urease is an enzyme that hydrolyzes urea into ammonia and carbon dioxide. This reaction provides bacteria with ammonia, a form of nitrogen they can assimilate for synthesizing amino acids and other nitrogen-containing compounds essential for growth.
Video consigliato:
02:17Introduction to Metabolism
Hydrolysis Reaction
The reaction catalyzed by urease is a hydrolysis reaction, where water is used to break chemical bonds—in this case, breaking urea into ammonia and carbon dioxide. Hydrolysis reactions are common in metabolism for breaking down complex molecules.
Video consigliato:
01:56Chemical Reactions
Pratica correlata
Domanda del libro di testo
Which of the following is an organic molecule?
a. H2O (water)
b. O2 (oxygen)
c. C18H29SO3
d. FeO (iron oxide)
e. F2C=CF2 (Teflon)
1810
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Domanda del libro di testo
Radioisotopes are frequently used to label molecules in a cell. The fate of atoms and molecules in a cell can then be followed. This process is the basis for the following question.
If E. coli were grown in a medium containing the radioactive isotope 32P, the 32P would be found in all of the following molecules of the cell except
a. ATP.
b. Carbohydrates.
c. DNA.
d. Plasma membrane.
e. Complex lipids.
998
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Domanda del libro di testo
Classify the following as subunits of either a carbohydrate, lipid, protein, or nucleic acid.
a. <IMAGE>
b. <IMAGE>
c. <IMAGE>
d. Thymine nucleotide
1490
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Domanda del libro di testo
The optimum pH of Acidithiobacillus bacteria (pH 3) is _______________ times more acid than blood (pH 7).
a. 4
b. 10
c. 100
d. 1000
e. 10,000
1413
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Domanda del libro di testo
Classify the following types of chemical reactions.
1697
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