In the story of Rick, Nick and Sick Tick why did Rick get sick and not Nick?
Nick had immunity against the disease
Rick got a communicable disease
Rick had a weak immune system
Rick got a contagious disease
The Correct Answer is A
A. Nick had immunity against the disease
The scenario implies that Nick had resistance (immunity), preventing illness despite exposure.
B. Rick got a communicable disease
This is true but doesn’t explain why Nick didn’t get sick.
C. Rick had a weak immune system
This is speculative; the key point is that Nick had immunity, not that Rick was unusually weak.
D. Rick got a contagious disease
Contagious diseases can spread, but this still doesn't explain Nick’s protection.
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Related Questions
Correct Answer is C
Explanation
A. Specific immunity: B cells, T cells:
B cells and T cells are part of the adaptive (specific) immune system.
B. Mechanical barriers: skin, mucous membrane:
These are physical defenses against infection.
C. Chemical barriers: tears, saliva, stomach acid, B cells, T cells:
Tears, saliva, and stomach acid are chemical barriers. B cells and T cells are not chemical barriers; they are components of specific immunity.
D. First line of defense: skin, mucous membrane, tears, sneezing:
These are all part of the body's innate first-line defenses.
Correct Answer is D
Explanation
A. Worm
Worms (helminths) are parasitic but can live independently of a host temporarily in certain environments.
B. Fungi
Fungi can survive and reproduce in non-living environments like soil or dead organic matter.
C. Arthropod
Arthropods (e.g., mosquitoes, ticks) can live freely and act as vectors but do not require a host to survive.
D. Virus
Viruses are obligate intracellular parasites and must infect a living host cell to reproduce and
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