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WorksheetsChapter 18 Viruses (18.1 + 18.2)-By: Bethany Nestor
Total questions: 7
Worksheet time: 4mins
What are Viroids?
Infect Plants
Single stranded RNA-no protein coat
Passed through seeds or pollen
All of the Above
What are Prions?
Infect only some plants
Cause Plant DNA to fold incorrectly and work improperly
Cause proteins to fold incorrectly and work improperly
None of the above
What is a Virus?
An infected particle that is made in animals
A single viral particle, is made of genetic material surrounded by a protein shell known as a capsid
Ew, just ew
An infected particle that is made only of a strand of DNA or RNA with a coat of protein around it
Describe the structure of a virion
A set of genes
Another name for a virus
An infected particle made of DNA or RNA
A single particle made of genetic material surrounded by a protein shell known as a capsid
Explain why each type of virus can only infect certain hosts
Viruses identify their hosts by fitting the virus' surface proteins into the hosts receptor molecules on its surface!
Virus' are picky
It's a mystery
Because virus' must be with hosts that are similar in their virus
Describe how the lysogenic infection is different between the lytic infection cycle?
In the lysogenic cycle, bacteriophage and host DNA combine, but in the lytic cycle, the virus bursts the host so that it can spread.
The lytic cycle is for prokaryotic cells and the lysogenic cycle is for eukaryotic cells.
Neither
Why does it matter anyway?
What is a Prophage?
A virus that is bigger and travels through the body slower.
A group a cells kept together by a strand of DNA
A set of genes, and the phage DNA enters into the DNA of the host cell
All of the above
