Questions

Q:

Which best describes the structure of a DNA molecule?

A) A double helix B) A strand of nucleic acids
C) A single strand of amino acids D) A sugar ring
 
Answer & Explanation Answer: A) A double helix

Explanation:

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. 

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Q:

Which statements about viruses are true?

A) HIV contains reverse transcriptase. B) A retrovirus contains RNA.
C) Both A & B D) All RNA-containing viruses are retroviruses.
 
Answer & Explanation Answer: C) Both A & B

Explanation:

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.

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Q:

What happens at the synapse between two neurons?

A) electrical signals are converted into chemical B) chemical signals are converted into physical
C) physical signals are converted into chemical D) None of the above
 
Answer & Explanation Answer: A) electrical signals are converted into chemical

Explanation:

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

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Q:

What's the speed and device maximum specs for Firewire?

Answer

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

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Subject: Hardware

0 2067
Q:

Why paging is used?

Answer

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.

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Q:

India’s fastest Train18 soon to start b/w NewDelhi and which city?

A) Gorakhpur B) Allahabad
C) Agra D) Varanasi
 
Answer & Explanation Answer: D) Varanasi

Explanation:
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Q:

As per the decision of the GST Council, e-Way Bill system has been rolled out from

A) 1st March 2018 B) 1st April 2018
C) 1st May 2018 D) 1st January 2018
 
Answer & Explanation Answer: B) 1st April 2018

Explanation:

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

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Q:

Which organelles are unique to plant cells?

A) Central vacuole B) Chlorophyll
C) Cell wall D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:
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