Questions

With the failure of the revolution of 1848 to unify Germany, one phase in the struggle for unification came to an end. Now Germany was to be unified not into a democratic country by the efforts of revolutionaries but by the rulers into a militaristic empire. The leader of this policy Bismarck who belonged to a prussian aristocratic family. He wanted to preserve the predominance of the landed aristocrats and the army in the united German state and to achieve the unification of Germany under the leadership of Prussian monarchy. He described his policy of unification as one of 'blood and iron'. The policy of 'blood and iron' meant a policy of war.

Pound Sterling is the official currency of United Kingdom.

-> Renminbi is the currency of China.

-> Euro is the currency of 19 countries like Spain, Austria, Finland, Italy, Germany, Greece, Belgium, etc...

-> Dollar is the currency of United States.

The term facultative anaerobe refers to an organism that which uses oxygen when it is present or grows without oxygen when it is not there.

Smooth Endoplasmic Reticulumdoes not contain ribosomes on its surface for which it is regarded as smooth. So, proteins cannotbe synthesised by SER provided protein synthesis is the primary task of ribosomes.

The correct sequence is DCBA.

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.

TRUTH TABLE FOR HALF ADDER

A    B  SUM  CARRY

0    0    0         0

0    1    1         0

1    0    1         0

1    1    0         1

INPLEMENTATION:

For SUM, The two inputs A and B are given to XOR gate.

For Carry, The two inputs A and B are given to AND gate.

Microscopes are of three types. They are :

1) Optical microscopes

2) Electron microscopes

3) Scanning tunneling microscopes

Scanning tunneling microscopes are the microscopes that are used to view metal surfaces.