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Q:

Which of the following statements is most accurate regarding infection with parvovirus B19?

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

Answer & Explanation Answer: A) Parvovirus B19 causes severe anemia because it preferentially infects erythrocyte precursors

Explanation:

Parvovirus 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.

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Filed Under: Biology
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Q:

Which Of The Following Statements Is Most Accurate For The Declaration X = Circle()?

A) x contains a reference to a Circle object	B) You can assign an int value to x
C) x contains an object of the Circle type	D) x contains an int value

Answer & Explanation Answer: A) x contains a reference to a Circle object

Explanation:

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Filed Under: Programming
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Q:

Which of the following is generally true about the stratosphere?

A) It is very dry	B) It is very moist
C) The dryness level varies with the season	D) The dryness level varies with the moon cycle

Answer & Explanation Answer: A) It is very dry

Explanation:

The stratosphere layer of the atmosphere is very dry.

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Filed Under: General Science
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Q:

Which among the following is NOT a function of RBI?

A) Serve as debt manager to other banks	B) To work as monetary authority and implement its Monetary Policy
C) Serve as banker to central and state governments	D) To serve as issuer of bank notes

Answer & Explanation Answer: A) Serve as debt manager to other banks

Explanation:

Serve as debt manager to other banks is not a function of RBI Bank.

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Filed Under: Indian Economy
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Q:

Which of the following pairs is mismatched?

A) Pila globosa - pearl	B) Kenia lacca - lac
C) Apis indica - honey	D) Bombyx mori - silk

Answer & Explanation Answer: A) Pila globosa - pearl

Explanation:

Pinctada vulgaris is a bivalve from which pearl is obtained.

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Filed Under: General Awareness
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Q:

Which of the following is not a polymer?

A) DNA	B) Glucose
C) Starch	D) Cellulose

Answer & Explanation Answer: B) Glucose

Explanation:

Since A polymer is a large molecule, or macromolecule, composed of many repeated subunits. Glucose is not a polymer.

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Filed Under: General Science
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Q:

Which statement best describes an igneous intrusion?

A) Igneous intrusion for when ice crystals splash into lava	B) Magma is injected into surrounding rock forming an igneous intrusive
C) Magma is exported to an open area and forms iron	D) Magma explodes to the surface and forms a smooth outer layer of rock

Answer & Explanation Answer: B) Magma is injected into surrounding rock forming an igneous intrusive

Explanation:

Magma is injected into surrounding rock forming an igneous intrusive.

Actually it is a plutonic formation in which magma present beneath Earth surface deforms the shape of rocks present above it

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Filed Under: Physics
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Q:

What is the name of the World's smallest republic which has an area of 21 sq.km.?

A) Palermo	B) Nauru
C) Vatican City	D) Namur

Answer & Explanation Answer: B) Nauru

Explanation:

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