When compared to the pressure of blood leaving the left ventricle, the pressure of blood leaving the right ventricle is
A. greater.
B. less.
C. not different.
B. less.
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Which type of body tissue acts as padding under the skin?
A) nervous B) muscle C) epithelial D) connective
If a person overdosed on depressant-type drugs that slow down breathing, in what direction would the reaction shift? Explain your answer. 
What will be an ideal response?
Foodborne illness can be prevented by boiling all food (meat and vegetables) prior to consumption.
A) True B) False
Different viruses have different properties that affect how the immune system responds to them and consequently how vaccines must be developed.Every year a new version of the flu vaccine is made using a mixture of strains. The strains are chosen based on surveillance and analysis by experts from the FDA, WHO, and CDC. For other diseases however, such as varicella (chickenpox), the same vaccine is used continually and repeated vaccinations are not necessary. What do you conclude is the important difference between the influenza virus and the varicella zoster virus with regards to vaccinations?
A. Influenza envelope proteins are bound by IgM, while varicella envelope proteins are bound by IgG. B. Influenza virus is transmitted through aerosol droplets in the air, while varicella can be transmitted via skin secretions. C. Influenza virus has a much higher mutation rate than varicella, leading to frequent antigen changes in the coat proteins. D. Varicella is attacked by the innate immune system, while influenza is attacked by the acquired immune system.