About This Chapter
Praxis Biology: Immunology - Chapter Summary
Use this professionally taught chapter on immunology to get ready for the Praxis Biology exam. Watch videos on antibiotics, vaccines and acquired immunity at your own pace and on your own schedule. After you finish this chapter, you should be ready to:
- Detail innate immunity mechanisms, including neutrophils, inflammation and natural killer cells
- Explain T cells, B cells, antibodies and other forms of acquired immunity
- Outline how vaccines and antibiotics work
- Discuss HIV, flu viruses and immune system evasion
- Identify antibiotic resistance and virulence as it relates to pathogens
Because this chapter is readily available, you can study any time that works well for you. Our videos are easy to navigate using the timeline feature, so you can go back and review as needed. If you have any questions along the way, reach out to one of our instructors through the Dashboard.
1. Innate Immunity: Inflammation, Neutrophils & Natural Killer Cells
You might already know how your body handles known infectious agents but how about unknown? Watch this video to explore your innate immune system - your body's defense against new bacteria and viruses.
2. Acquired Immunity: T Cells, B Cells and Antibodies
Have you ever wondered why some people don't ever seem to get sick? These people likely have an acquired immunity. Learn more about the immune system and how exposure to an illness one time can help your body to prevent that illness from ever occurring again.
3. Antibiotics and Vaccines
Do you know why children must get regularly vaccinated? Have you ever wondered how an antibiotic works and why they are so widely prescribed? If so, this lesson will help you to understand how changes in medicine have almost eliminated several deadly diseases and added decades to the average person's lifespan.
4. 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.
5. Pathogens: Antibiotic Resistance and Virulence
Find out more about how the overuse of antibiotics could lead to some serious problems with epidemics or untreatable diseases in the future. You can also discover some of the things that make pathogens harmful and why pathogens don't cause disease in every species they infect.
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