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- Question
Which of the following statements is most accurate regarding infection with parvovirus B19?
Options- A. Parvovirus B19 causes severe anemia because it preferentially infects erythrocyte precursors
- B. Parvovirus B19 can cause hydrops fetalis via transplacental infection of a fetus in a seropositive mother
- C. Parvovirus B19 can be diagnosed by detection of viral RNA using PCR or hybridization assays
- D. Parvovirus B19 replicates in the host cell nucleus utilizing a virally encoded DNA polymerase to create a double- stranded DNA intermediate
- Correct Answer
- Parvovirus B19 causes severe anemia because it preferentially infects erythrocyte precursors
ExplanationParvovirus B19 causes severe anemia because it preferentially infects erythrocyte precursors.
a. Parvovirus B19 binds preferentially to the erythrocyte blood group P antigen on erythroid precursor cells.
Answers B, C, D are incorrect:
b. after entry the single-stranded viral DNA genome is transported to the cell nucleus where the host DNA polymerase synthesizes the complimentary DNA strand.
c. Parvovirus B19 infection can be diagnosed by direct detection of viral DNA not RNA.
d. the fetus of a seropositive mother is protected from infection by maternal circulating antibodies.
- 1. Cartography is the science of
Options- A. coins
- B. maps
- C. cartoons
- D. None of the above Discuss
- 2. What allows a cell to respond to a hormone?
Options- A. hormone response element
- B. presence of hormone receptor
- C. Adrenocorticotropic
- D. None of the above Discuss
- 3. Jesse Owens Global award is given in the field of
Options- A. Literature
- B. Journalism
- C. Science
- D. Sports Discuss
- 4. A person who knows many foreign languages
Options- A. Grammarian
- B. Polyglot
- C. Linguist
- D. Bilingual Discuss
- 5. who was the first non-human to win an Oscar?
Options- A. Pussycat
- B. Mickey Mouse
- C. Ninja
- D. Bender Discuss
- 6. What is the major source of dietary sulfur?
Options- A. Proteins
- B. Carbohydrates
- C. Mineral salts
- D. All of the above Discuss
- 7. Exercise frequency refers to
Options- A. number of times you exercise per week
- B. number of times you exercise per month
- C. number of times you exercise per day
- D. All of the above Discuss
- 8. Which macronutrient is vital for every function of the body?
Options- A. Fats
- B. Carbohydrates
- C. Water
- D. Proteins Discuss
- 9. Teens who drink are at risk of
Options- A. HIV and other STDs
- B. becoming an alcoholic
- C. date rape
- D. All of the above Discuss
- 10. Who was the first person to receive a Jnanpith award for a Telugu work ?
Options- A. C. Narayana reddy
- B. Viswanatha Satyanarayana
- C. Ravuri Bharadwaja
- D. Srirangam Srinivasarao Discuss
More questions
Correct Answer: maps
Explanation:
Cartography is the science which deals with the study and practice of making maps.
Correct Answer: presence of hormone receptor
Correct Answer: Sports
Correct Answer: Linguist
Correct Answer: Mickey Mouse
Explanation:
Mickey Mouse was the first non-human to win an Oscar in 1932.
Walt Disney won the first of his many Oscars for the creation of Mickey Mouse.
Correct Answer: Proteins
Explanation:
Protein cantaining foods are the major source of dietary sulfur. Foods like eggs are rich in sulfur content.
Correct Answer: number of times you exercise per week
Explanation:
Exercise frequency refers to number of times you exercise per week.
Correct Answer: Water
Explanation:
The macronutrient water is the most essential nutrient which plays a vital role in every function of the body. Macronutrients are those nutrients that are required in excess amounts for the development and functioning of the body.
Correct Answer: All of the above
Correct Answer: Viswanatha Satyanarayana
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