Question 27 A 9-year-old boy receives the chickenpox (varicella) vaccine. Two years later, he is exposed to a classmate with chickenpox but does not get sick. Which adaptive immune process best explains his protection? O Memory B and T cells responded quickly to the virus O Innate immunity killed the virus immediately O Natural killer cells destroyed infected cells before illness began O Macrophages permanently removed the virus after his vaccination 2 pts
Added by Michael R.
Close
Step 1
The question asks to identify the adaptive immune process that explains why a vaccinated boy did not get sick after exposure to chickenpox. The key terms are "adaptive immune process" and "vaccine." Show more…
Show all steps
Your feedback will help us improve your experience
Madhur L and 57 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
A child was exposed to a disease-causing virus (most likely chicken pox from the Varicella zoster virus) when he was 5 years old. At 12 years old, the child encounters the same virus again. What is most likely expected to happen? Choose one: A. Since macrophages already acted against the pathogen, they will engulf the virus immediately upon exposure. B. After a short lag phase, the child will mount an immune response and serum antibody concentration will increase. C. The pathogen will be neutralized with antibody quickly and the virus will be cleared before symptoms develop. D. The child will be administered antibiotics immediately to remove the disease-causing pathogen.
Madhur L.
Below is a figure that summarizes human adaptive immunity. Based on this, please briefly answer the following questions. a) Please explain why a vaccine based on inactivated viruses can help protect humans from the infection of COVID-19.
Figure 6. Adaptive Nature of B-cells 1. Use your textbook and Figure 6 to describe the speed and concentration of antibodies that are made contrasting first exposure to a pathogen and second exposure to the same pathogen (primary and secondary response). A friend has been sexually active for many years and is concerned about HIV or herpes virus. A blood test reveals the presence of antibodies to the herpes simplex virus but not to HIV. What does this mean in terms of his exposure to pathogens? Vaccines are designed to "educate" the body's immune system to recognize and eliminate a particular threat based on its molecular structure. A vaccine introduces a killed or inactivated virus or bacterial antigen into the body to produce a population of memory cells. A vaccine triggers a primary immune response and the subsequent production of antibodies and memory cells against the pathogen. Go to the following website: http://www.pbs.org/wgbh/nova/meningitis/ Virtually create six different types of vaccines and use this information to answer the questions below.
Adi S.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD
