Questions

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.

Oxygen crosses a plasma membrane by Osmosis.

The Elephanta Caves are located in Western India on Elephanta Island (otherwise known as the Island of Gharapuri), which features two hillocks separated by a narrow valley. The name Ardhanarishvara (famous statue of Elephanta) means the Lord Who is half woman, Ardhanarishvara is also known by other names. The Gupta-era writer Pushpadanta in his Mahimnastava refers to form as dehardhaghatana. Utpala, commenting on the Brihat Samhita, calls this form Ardha-gaurishvara, the Vishnudharmottara Purana simply calls this form Gaurishvara.Buddhist caves in Elephants and the caves built by the followers of Pashupata cult (a Shaivite Hinduschool).The island and its resident caves received the name 'Elephanta' from Portuguese invaders after the discovery of a black stone sculpture of an elephant on the island.

A large underground economy results in an Overstated GDP. The underground economy is also called as Black market. It refers to illegal economic activity. Transactions in the underground economy are illegal either because the good or service being traded is illegal or because an otherwise licit transaction does not comply with government reporting requirements.

The first oil well was dug in 1859. The oil production has since declined but it retains its name for high grade oil