Summary: Fundamentals Of Plant Pathology And Entomotology
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Read the summary and the most important questions on Fundamentals of plant pathology and entomotology
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virology lesson 1
This is a preview. There are 12 more flashcards available for chapter 06/02/2021
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What is the smallest virus?
Porcinecircovirus . -
What is the largest virus
Pandoravirus -
Name the three components that make a virus
1. Nucleic acid: (RNA or DNA)
2. Protein
3. Lipids -
Name three coat structures
1. Helical symmetry; rod shaped
2. isometrical symmetry; spherical
3. complex structure; enveloped -
A virus must contain at least 5 ORFS. What do these encode for?
1. Replication
2. Transmission
3. Movement
4. Encapsidation
5. Suppressor of antiviral RNAi -
Name 5 different translation strageties
1. Genome segmentation; multiple RNAs molecules
2. Poly-protein processing; a large RNA molecule is cleaved after translation by a viral protease
3. Subgenomic messenger production; during replication, the virus produces shorter subgenomic mRNAs
4. Read-through translation; suppression of a stop codon
5. Frame shifting; the ribosome shifts just before a stopcodon -
Most viruses posses a capsid that is assembled from subunits. Name four reasons for why a particle architecture is based on the assembly of smaal subunits
1. Strucutral necessity;
2. Economy of space;
3. Allowing self-assembly;
4. Genetic stability; -
How is the genetic information of the Brome mosaic virus translated
Segmentation and subgenomic messengers -
How do you call a virus that has 3 segmented RNAs, 2 and 1?
Triparticle virus,
biparticle virus
monoparticle virus -
What are the 8 steps in virus replication and spread
1. Penetration
2. Disassembly
3. Early translation
4. Replication
5. Translation
6. Assembly accumulation
7. Transport within plant
8. Vector transport plant-to-plant
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