Observe the diagram and answer the following questions:

Identify the correct statements with respect to retrovirus.
A. DNA genome of the virus forms complementary RNA
B. After getting into the body of a person the virus enter into macrophages
C. The viral RNA gets incorporated into host cell DNA
D. The macrophages act like virus factory
Choose the correct answer from the options given below:

Read the following paragraph and answer the given questions.
RNAi takes place in all eukaryotic organisms as a method of cellular defense. The source of this complementary RNA could be from an infection by viruses having RNA genomes or mobile genetic elements (transposons) that replicate via an RNA intermediate. Insulin from an animal source, though caused some patients to develop allergy or other types of reactions to the foreign protein. Insulin consists of two short polypeptide chains: chain A and chain B, that are linked together by disulphide bridges. Transgenic mice are being developed for use in testing the safety of vaccines before they are used on humans. Transgenic mice are being used to test the safety of the polio vaccine. If successful and found to be reliable, they could replace the use of monkeys to test the safety of batches of the vaccine. Specific Bt toxin genes were isolated from Bacillusthuringiensis} and incorporated into the several crop plants such as cotton. The choice of genes depends upon the crop and the targeted pest, as most Bt toxins are insect-group specific. The toxin is coded by a gene cryIAc named cry. There are a number of them, for example, the proteins encoded by the genes cryIAc and cryIIAb control the cotton bollworms, that of cryIAb controls corn borer.

The suitable example of mobile genetic elements is:

Identify the role of deoxyribonucleoside triphosphates in DNA replication?

Which one of the following regions is not present in transcriptional unit of DNA

Sap of which plant is fermented to produce 'Toddy' in southern India ?

Which one of the following property is exhibited by Datura plant?

In the majority of flowering plants, a certain pattern is followed in megaspore mother cell (MMC) undergoing meiosis and producing megaspores. How many functional megaspores would be produced with 32 MMC?

Aspartame is used in cold foods and soft drinks even though it is roughly 100 times as sweet as cane sugar and can pose a health hazard because:

Calculate the Gibbs free energy for the given reaction, with the standard electrode potential equal to 1.1 V
\(Zn ( s )+ Cu ^{2+}( aq ) \rightarrow Zn ^{2+}( aq )+ Cu ( s )\)

The factor(s) governing the flow of electricity through an electrolytic solution is/are
(A) The nature of inter-ionic attraction.
(B) Temperature
(C) Solvation of ions.
(D) The nature of solvent and its viscosity.
Choose the correct answer from the options given below:

A stone is dropped into a lake and waves move in circles at a speed of \(8 cm / sec\). At the instant, when the radius of the circular wave is 10 cm , how fast is the enclosed area increasing?

Which of the following has the maximum penetration power ?

A motorcycle has a scrap value of Rs. 22,500 after 15 years of its purchase.
If the annual depreciation charge is Rs. 8,500, then the original cost by linear method is :