Microbiology Exam 1 Review

Viruses were discovered by filtering infectious fluid through a filter designed to trap what ?

• Bacteria

• Algae

• Fungi

• Membranes within the cell

What did the experiment of the bacteria through the porcelain filters teach us ?

• That bacteria was the cause of disease

• That disease was caused by something smaller than bacteria

• That viruses couldn't fit through the filters

• That Viruses are larger than Bacteria

What types of cells can Viruses infect

• Only bacterial cells

• Only animal cells

• Only prokaryotic ones

• all of them

How do viruses reproduce

• They take over the living cells machinery

• They slide in the cell on their own

• They can reproduce themselves

• They put themselves in our bloodstream first

Are viruses alive ?

• yes

• no

protein shells are also known as

• Capsid

• Nuclei

• Cell Envelope

• Chemical Machinery

How many enzymes do Viruses have ?

• 200+

• none

• 1-5 depending on the type

• only 1

Arhcae live in ________ environments.

• extreme

• normal

• neutral

All viruses contain-

• nucleic acids
• ribosomes
• mitochondria
• cytoplasm

What part of a virus houses the genetic material (DNA/RNA)?

• tail

• nucleus

• capsid

• lipid