About This Chapter
How it works:
- Begin your assignment or other microbiology work.
- Identify the virus concepts that you're stuck on.
- Find fun videos on the topics you need to understand.
- Press play, watch and learn!
- Complete the quizzes to test your understanding.
- As needed, submit a question to one of our instructors for personalized support.
Who's it for?
This chapter of our college microbiology tutoring solution will benefit any student who is trying to learn about viruses and earn better grades. This resource can help students including those who:
- Struggle with understanding virus structure, function, classification, life cycle, replication and mutation or any other virus topic
- Have limited time for studying
- Want a cost effective way to supplement their biology learning
- Prefer learning biology visually
- Find themselves failing or close to failing their introductory virus unit
- Cope with ADD or ADHD
- Want to get ahead in microbiology
- Don't have access to their biology teacher outside of class
Why it works:
- Engaging Tutors: We make learning about viruses simple and fun.
- Cost Efficient: For less than 20% of the cost of a private tutor, you'll have unlimited access 24/7.
- Consistent High Quality: Unlike a live microbiology tutor, these video lessons are thoroughly reviewed.
- Convenient: Imagine a tutor as portable as your laptop, tablet or smartphone. Learn about viruses on the go!
- Learn at Your Pace: You can pause and rewatch lessons as often as you'd like, until you master the material.
- Describe the structure and function of viruses.
- Explore the different shapes of viruses.
- Discuss the life cycle of viruses.
- Explain how viruses are classified.
- Learn how DNA and RNA viruses replicate.
- Understand how viruses mutate.
- Compare and contrast the bacteriophage lytic and lysogenic cycles.
- Explain how flu viruses and HIV evade the immune system.
1. What Are Viruses? - Definition, Structure & Function
In this lesson, you'll learn some historical facts about viruses and the material they are composed of. Find out more as we review the capsid, nucleic acids, the viral envelope, viruses, virions, bacteriophages and virology.
2. Shapes of a Virus: Helical, Icosahedral, Prolate, Complex & Enveloped
Learn about the different shapes viruses can have, such as helical, icosahedral, prolate, complex and enveloped. Find out why one shape is particularly useful from an energetic standpoint.
3. The Life Cycle of a Virus: How Viruses Live, Attack & Replicate
Find out how viruses infect and replicate as we explore the important steps of the virus life cycle, including attachment, uncoating, penetration, replication, and release, as well as the lysogenic and lytic cycles.
4. Classification of Viruses: Viral Genome and Replication Scheme
Find out how viruses are classified based on their being double-stranded, single-stranded, positive-sense, negative-sense, or by having something called reverse transcriptase.
5. Replication of DNA Viruses
This lesson will give you a basic overview of how DNA viruses replicate inside of a host cell. We will cover the entry, integration, replication and release of DNA viruses.
6. Replication of RNA Viruses
This lesson will give you a basic overview of how different types of RNA viruses replicate inside of an animal cell. We will cover the essence of being double-stranded and retroviruses, as well as positive-and negative-sense RNA viruses.
7. How Viruses Mutate: Antigenic Drift and Antigenic Shift
This lesson will discuss the major ways by which viruses, notably the flu virus, mutates. We will talk about recombination, reassortment, antigenic drift, antigenic shift, and more!
8. Viruses: Bacteriophage Lytic and Lysogenic Cycles
Viruses are generally not only our enemy but also the enemy of many other organisms. Bacteriophages are viruses that infect specific bacteria. In this lesson, we'll discuss their basic structure and infection cycle.
9. Flu Viruses, HIV and Immune System Evasion
Why is it that our immune systems can protect us from some viruses but not others? We've eradicated smallpox by using vaccines, so why do influenza and HIV remain such dangerous health risks? In this lesson about viruses, we'll explore these questions and learn how influenza and HIV continue to evade the human immune system.
10. Virulence Factor: Definition & Examples
We will discuss what virulence means and get a working definition of virulence factors. We are going to explore different virulence factors that are used and how they affect our bodies.
11. Australia Antigen: Symptoms & Treatment
The Australia antigen is associated with the hepatitis B virus and is one of the antigens used to diagnose a hepatitis B infection. Learn more about it in this lesson, as well as corresponding symptoms and possible treatment options.
12. HBsAg: Screen & Test
Hepatitis B Virus can cause severe illness, leading the cirrhosis and cancer of the liver. The HBsAg screen is used to help detect and diagnose HBV infection in patients and the blood supply.
13. Antigens vs. Pathogens
Pathogens are small agents that can make you sick. Antigens are a part of the pathogen that your body recognizes. This lesson discusses how they differ and how your body protects against them.
Earning College Credit
Did you know… We have over 160 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.
To learn more, visit our Earning Credit Page
Transferring credit to the school of your choice
Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.
Other chapters within the Microbiology: Tutoring Solution course
- Biology Review for Microbiology: Tutoring Solution
- Microbiology Basics: Tutoring Solution
- Bacterial Biology: Tutoring Solution
- Microbiology Laboratory Techniques: Tutoring Solution
- Microorganisms and the Environment: Tutoring Solution
- The Disease Process: Tutoring Solution
- DNA Viruses: Tutoring Solution
- RNA Viruses: Tutoring Solution
- Protozoan Diseases: Tutoring Solution
- Fungal Infections: Tutoring Solution
- Foodborne Illnesses & Bacterial Infections: Tutoring Solution
- Sexually Transmitted Bacterial Diseases: Tutoring Solution
- Bloodborne Bacterial Diseases: Tutoring Solution
- Bacterial Diseases of the Respiratory Tract: Tutoring Solution
- Bacterial Skin and Wound Infections: Tutoring Solution
- Immunology And the Body's Defenses Against Pathogens: Tutoring Solution
- Antimicrobial Drugs: Tutoring Solution
- Food and Industrial Microbiology: Tutoring Solution
- Sterilization and Antiseptic Techniques: Tutoring Solution