Epidemics 3

What is a particle made of nucleic acid and protein that can only replicate by infecting living cells?

• bacteria

• virus

• fungus

• protist

Which of the following statements about viruses is true?

• They're living: they have DNA and RNA

• They're non-living: they can't change/evolve over time

• They're non-living: they can only replicate with a host

• They're living: they grow and develop

How can viruses be seen?

• electron microscope

• naked eye

• light microscope

• dissecting microscope

What is the protein coat that covers a virus and makes it only able to infect certain types of cells?

• phage

• lipid

• capsid

• DNA

What can help stop the spread of viruses?

• isolating bad air

• antibiotics

• removing all water pumps

• vaccination

Pasteurization is the process where

• Heat is used to kill microorganisms

• Radiation is used to kill microorganisms

• Glass is used to kill microorganisms

• Chemicals are used to kill microorganisms

What statement best refelect's the Germ theory?

• Most diseases are caused by mylasia

• Most diseases are caused by microcorganisms

• Most diseases are caused by the weather

• Most diseases are caused by unkown sources

Viruses are made of a capsid, nucleic material and are _____

• prokaryotic

• eukaryotic

• non-living

• endospores

What do viruses need to reproduce?

• Genetic material

• A host cell

• Bacteria

• Insulin

What type of disease can antibiotics cure?

• Virus

• Prions

• Bacteria

• Yeast