Domanda del libro di testo
The outer surface of a virion consists of either a membranous envelope or a protein capsid. How does the outer surface correlate with a virus's mode of exiting a host cell?
912
views
Ch. 33 - Viruses
Freeman8th EditionBiological ScienceISBN: 9780138276263
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
TOC.tableOfContents
- Ch. 1 - Biology: The Study of Life13
- Ch. 2 - Water and Carbon: The Chemical Basis of Life14
- Ch.3 - Protein Structure and Function10
- Ch.4 - Nucleic Acids and the RNA World10
- Ch. 5 - An Introduction to Carbohydrates10
- Ch. 6 - Lipids, Membranes, and the First Cells11
- Ch. 7 - Inside the Cell10
- Ch. 8 - Energy and Enzymes: An Introduction to Metabolism10
- Ch. 9 - Cellular Respiration and Fermentation11
- Ch. 10 - Photosynthesis12
- Ch. 11 - Cell-Cell Interactions12
- Ch. 12 - The Cell Cycle8
- Ch. 13 - Meiosis12
- Ch. 14 - Mendel and the Gene23
- Ch. 15 - DNA and the Gene: Synthesis and Repair15
- Ch. 16 - How Genes Work16
- Ch. 17 - Transcription, RNA Processing, and Translation16
- Ch. 18 - Control of Gene Expression in Bacteria16
- Ch. 19 - Control of Gene Expression in Eukaryotes12
- Ch. 20 - The Molecular Revolution: Biotechnology, Genomics, and New Frontiers15
- Ch. 21 - Genes, Development, and Evolution12
- Ch. 22 - Evolution by Natural Selection16
- Ch. 23 - Evolutionary Processes13
- Ch. 24 - Speciation15
- Ch. 25 - Phylogenies and the History of Life13
- Ch. 26 - Bacteria and Archaea15
- Ch. 27 - Diversification of Eukaryotes16
- Ch. 28 - Green Algae and Land Plants16
- Ch. 29 - Fungi18
- Ch. 30 - An Introduction to Animals9
- Ch. 31 - Protostome Animals15
- Ch. 32 - Deuterostome Animals17
- Ch. 33 - Viruses16
- Ch. 34 - Plant Form and Function16
- Ch. 35 - Water and Sugar Transport in Plants16
- Ch. 36 - Plant Nutrition13
- Ch. 37 - Plant Sensory Systems, Signals, and Responses16
- Ch. 38 - Flowering Plant Reproduction and Development16
- Ch. 39 - Animal Form and Function17
- Ch. 40 - Water and Electrolyte Balance in Animals16
- Ch. 41 - Animal Nutrition16
- Ch. 42 - Gas Exchange and Circulation16
- Ch. 43 - Animal Nervous Systems16
- Ch. 44 - Animal Sensory Systems16
- Ch. 45 - Animal Movement11
- Ch. 46 - Chemical Signals in Animals16
- Ch. 47 - Animal Reproduction and Development16
- Ch. 48 - The Immune System in Animals16
- Ch. 49 - An Introduction to Ecology15
- Ch. 50 - Behavioral Ecology16
- Ch. 51 - Population Ecology16
- Ch. 52 - Community Ecology20
- Ch. 53 - Ecosystems and Global Ecology17
- Ch. 54 - Biodiversity and Conservation Ecology18
Freeman8th EditionBiological ScienceISBN: 9780138276263Non è quello che usi tu?Cambia libro di testo
Capitolo 33, Problema 6
Compare and contrast the bacteriophage lytic cycle and lysogeny by addressing
(1) the rate of replication of the viral genome
(2) production of virions, and
(3) effect on the host cell.
Guida verificata passo dopo passo1
Step 1: Begin by understanding the bacteriophage lytic cycle. In this cycle, the viral genome is rapidly replicated using the host cell's machinery. The bacteriophage hijacks the host's resources to produce multiple copies of its DNA or RNA.
Step 2: Contrast this with lysogeny, where the viral genome integrates into the host cell's genome as a prophage. During lysogeny, replication of the viral genome occurs passively as the host cell divides, meaning it is slower compared to the lytic cycle.
Step 3: Examine the production of virions. In the lytic cycle, the host cell's machinery is directed to produce new virions (complete virus particles), which are assembled and eventually released. In lysogeny, no virions are produced during the dormant phase, as the virus remains latent within the host genome.
Step 4: Analyze the effect on the host cell. In the lytic cycle, the host cell is destroyed (lysed) as the new virions are released, leading to cell death. In lysogeny, the host cell remains alive and continues to function normally, although it carries the integrated viral genome.
Step 5: Summarize the key differences: The lytic cycle is characterized by rapid replication, active production of virions, and destruction of the host cell, while lysogeny involves slower replication, no immediate virion production, and preservation of the host cell during the dormant phase.
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:
2mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Bacteriophage Lytic Cycle
The lytic cycle is a viral replication process where a bacteriophage infects a host bacterium, hijacks its cellular machinery to replicate its genome, and ultimately causes the host cell to lyse, releasing new virions. This cycle is characterized by rapid replication and high virion production, leading to immediate effects on the host cell, including cell death.
Video consigliato:
08:04
Lytic and Lysogenic Cycles
Lysogeny
Lysogeny is a viral life cycle in which the bacteriophage integrates its genome into the host bacterium's DNA, forming a prophage. This process allows the viral genome to be replicated along with the host's genome during cell division, resulting in a slower rate of replication and no immediate production of virions, which preserves the host cell's viability for an extended period.
Video consigliato:
08:04Lytic and Lysogenic Cycles
Comparison of Effects on Host Cell
The lytic cycle leads to the destruction of the host cell through lysis, while lysogeny allows the host cell to survive and replicate, albeit with the viral genome incorporated. This difference in outcomes affects the host population dynamics, as lytic infections can lead to rapid declines in bacterial numbers, whereas lysogenic infections can contribute to genetic diversity and stability within bacterial populations.
Video consigliato:
05:33Cell Junctions
Pratica correlata
Domanda del libro di testo
If you come down with the flu, should your physician prescribe an antibiotic for you? Explain why or why not.
606
views
Domanda del libro di testo
In the viral replicative cycle, what reaction do viral proteases catalyze?
Select True or False for each statement.
T/F They catalyze polymerization of amino acids into peptides.
T/F They catalyze folding of long peptide chains into functional proteins.
T/F They catalyze cutting of polyprotein chains into functional proteins.
T/F They catalyze breaking of peptide bonds
1093
views
Domanda del libro di testo
If you were in charge of the government's budget devoted to stemming the AIDS epidemic, would you devote most of the resources to drug development or preventive medicine? Defend your answer.
772
views
Domanda del libro di testo
What features distinguish the seven major categories of viruses?
1020
views
Domanda del libro di testo
Of the viruses highlighted in Section 33.4, predict which of the following would be able to make viral proteins if nothing more than its genome were injected into a suitable host cell.
a. Pea mosaic (+ssRNA virus)
b. Bluetongue (dsRNA) virus
c. Measles (−ssRNA) virus
d. Human immunodeficiency (RNA reverse-transcribing) virus
579
views