Study Guide

Microorganisms: Viruses Topics

Virus Classification

We all get sick, and when we do, it's usually due to one of two reasons: we were infected by a...

Viral Genomes

The genomes of viruses are just like every other genome: they contain all the genes necessary to...

Types of Viral Spread

So, there are a lot of different types of viruses out there (and that's not even including the...

Capsid Type

Capsids are the protein coats that protect viral genomes. They are made from one or more proteins...

Plant and Fungal Viruses

For the most part, this chapter is going to only talk about animal viruses. "But," you say, "What...

Phages

Viruses that specifically infect bacteria and archaea (the other two domains of life) are called...

Nontraditional "Viruses"

For all the variety in viruses that we've talked about, viruses include other virus-like...

Viral Entry

There are three major steps of a virus replication cycle. First, the virus has to get into a...

Viral Replication

Viruses are obligate intracellular parasites, which means they have to live inside of a host and...

Viral Assembly and Exit

If the conditions are right for making viruses, virus proteins are made, but must be assembled...

Immune Defense Against Viruses

 Your body doesn't simply sit idly by as viruses come in and kill off all your cells. For...

Restriction Factors

Restriction factors are proteins that block virus infection by restricting its replication...

Viral Escape from the Immune System

Why is the innate immune system not very good against virus infections? Because viruses are...

Antiviral Drugs

While the immune system does a lot to control virus infections, it obviously doesn't do...

Vaccines

Believe it or not, vaccines have been around for centuries. Vaccines are therapies that prime the...

Common Mistakes

Many people think that viruses are bacteria and don’t really understand the differences...

Test Your Knowledge

1. What is the main difference between enveloped and naked virus particles?(A) Enveloped viruses...

Made From Trees

Principles of Molecular Virology. Alan J. Cann, © 2001 Academic PressPrinciples of Virology....