What does it mean when we say a vaccine is based on an "attenuated" virus?
A) The vaccine isn't the virus at all, just similar-shaped chemicals.
B) The vaccine is based on a virus that has been rendered harmless by lab-induced mutation.
C) The vaccine is a similar species to the virus that isn't harmful (e.g., cowpox for smallpox).
D) The vaccine is a live virus that has been heat-killed.
E) The vaccine is a live virus that has been chemically damaged.
Answer: B
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a. heart disease b. colon cancer c. intellectual disability d. spina bifida e. liver cirrhosis
Which of the following is controlled by the sensory-somatic nervous system?
a. heart b. lungs c. skeletal muscle d. endocrine glands
Which of the following are examples of kinetic energy?
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