Questions

DNA is not a single stranded and does not have amino acids. Hence options, b & C are eiminated. Dna is a double helix structure containing nucleobase—either cytosine (C), guanine (G), adenine (A), or thymine (T)—as well as a monosaccharide sugar called deoxyribose and a phosphate group. 

The statements true about viruses are :

1. The capsid enters the host cell if the virus is enveloped.

2. Enveloped viruses bud from the host cell. 

3. HIV contains reverse transcriptase.

4. A retrovirus contains RNA.

At the synapse between two neurons, electrical signals are converted into chemical signals. A synapse is the gap between the two neurons.

IEEE 1394 (Firewire) supports the maximum of 63 connected devices with speeds up to 400 Mbps.

Paging is solution to external fragmentation problem which is to permit the logical address space of a process to be noncontiguous, thus allowing a process to be allocating physical memory wherever the latter is available.

As per the decision of the GST Council, e-Way Bill system has been rolled out from 1st of April this year (2018).