Domanda del libro di testo
Can an amino acid be both glucogenic and ketogenic? Explain why or why not.
700
views
Ch.25 Protein and Amino Acid Metabolism
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
TOC.tableOfContents
- 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: 9780134015187Non è quello che usi tu?Cambia libro di testo
Capitolo 25, Problema 50
The pancreatic proteases are synthesized and stored as zymogens. They are activated after the pancreatic juices enter the small intestine. Why is it essential that these enzymes be synthesized and stored in their inactive forms?
Guida verificata passo dopo passo1
Understand the role of pancreatic proteases: Pancreatic proteases are enzymes that break down proteins into smaller peptides and amino acids during digestion. Examples include trypsin and chymotrypsin.
Define zymogens: Zymogens are inactive precursors of enzymes. They require a biochemical change, such as cleavage of a specific peptide bond, to become active enzymes.
Explain the necessity of zymogen storage: If pancreatic proteases were synthesized and stored in their active forms, they could digest proteins within the pancreas itself, leading to tissue damage and conditions like pancreatitis.
Describe the activation process: Zymogens are activated only after they are secreted into the small intestine, where specific enzymes (e.g., enterokinase) convert them into their active forms. This ensures that protein digestion occurs only in the appropriate location.
Summarize the importance of zymogen synthesis: Synthesizing and storing proteases as zymogens prevents premature activation and protects the pancreas from self-digestion, ensuring the enzymes function only when and where they are needed.
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
3mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Zymogens
Zymogens are inactive enzyme precursors that require a biochemical change to become active enzymes. In the case of pancreatic proteases, they are synthesized as zymogens to prevent the enzymes from digesting the tissues of the pancreas itself, which could lead to damage or pancreatitis.
Video consigliato:
Percorso guidato
2:21
Zymogens Example 1
Activation Process
The activation of zymogens occurs in the small intestine, where they are converted into active enzymes by specific proteolytic cleavage. This process ensures that the enzymes are only activated when they reach the appropriate environment, allowing for controlled digestion of proteins without harming the pancreas.
Video consigliato:
Percorso guidato
2:25Processing of Pre-mRNA Concept 1
Digestive Enzyme Regulation
The regulation of digestive enzymes is crucial for maintaining homeostasis in the digestive system. By storing enzymes in their inactive forms, the body can prevent premature activation, which could lead to inappropriate digestion of bodily tissues and ensure that enzymes are only active when needed for food digestion.
Video consigliato:
Percorso guidato
1:17Digestion of Proteins Example 1
Pratica correlata
Domanda del libro di testo
Why might it be a bad idea to take large quantities of a single amino acid dietary supplement?
638
views
Domanda del libro di testo
Determine how many ATPs you would make if you consumed a tetrapeptide comprised of leucine, histidine, valine, and lysine. Have each member of your group take one of the four amino acids and determine the number of ATPs their amino acid would make and combine them to get the total.
518
views
Domanda del libro di testo
The net reaction for the urea cycle shows that three ATPs are hydrolyzed; however, the total energy “cost” is four ATPs. Explain why this is true.
883
views
Domanda del libro di testo
Name the four compounds within the citric acid cycle that the carbon skeletons of the glucogenic amino acid enter as.
601
views
Domanda del libro di testo
Which of the following biomolecules contain nitrogen?
a. Glycogen
b. Nitric oxide
c. Collagen
d. Epinephrine
e. Stearic acid
f. Fructose
586
views