Question 1. According to the paragraph, what is the mechanism of action of mRNA vaccines?
A) They introduce a live virus into the body.
B) They instruct the body's cells to produce a piece of the viral spike protein.
C) They generate memory T-cells that respond quickly to the virus.
D) They contain a piece of the virus's DNA.
Question 2. According to the paragraph, what are some advantages of mRNA vaccines?
A) They can be produced quickly, have high efficacy rates, and a good safety profile.
B) They contain a live virus, generate memory T-cells, and are more affordable.
C) They are easy to distribute, require no special equipment, and can be stored at room temperature.
D) They have a low efficacy rate, require a long development time, and can cause the disease.
Question 3. According to the paragraph, which of the following is NOT true about mRNA vaccines?
A) They can be developed and manufactured more quickly than traditional vaccines.
B) They have shown high efficacy rates in clinical trials.
C) They do not contain live virus and cannot cause the disease.
D) The mRNA used in these vaccines integrates into the host genome, posing long-term risks.
Question 4. Which of the following can be inferred from the paragraph about mRNA vaccines?
A) mRNA vaccines contain live virus
B) mRNA vaccines do not trigger an immune response
C) mRNA vaccines are more expensive to manufacture than traditional vaccines
D) mRNA vaccines can provide long-term immunity against the virus
Question 5. The author of the paragraph implies that mRNA vaccines are superior to traditional vaccines in which of the following ways?
A) Efficacy rates
B) Cost of manufacturing
C) Ease of distribution
D) Ability to cause long-term effects