Questions

Q:

In a plant cell, DNA may be found in

A) only in the nucleus and mitochondria. B) only in the nucleus and chloroplasts
C) in the nucleus, mitochondria, and chloroplasts. D) only in the nucleus.
 
Answer & Explanation Answer: C) in the nucleus, mitochondria, and chloroplasts.

Explanation:

All of the genetic information in a cell was initially thought to be confined to the DNA in the chromosomes of the cell nucleus.

It is now known that small circular chromosomes, called extranuclear, or cytoplasmic, DNA, are located in two types of organelles found in the cytoplasm of the cell.

These organelles are the mitochondria in animal and plant cells and the chloroplasts in plant cells.

Chloroplast DNA (cpDNA) contains genes that are involved with aspects of photosynthesis and with components of the special protein-synthesizing apparatus that is active within the organelle.

Mitochondrial DNA (mtDNA) contains some of the genes that participate in the conversion of the energy of chemical bonds into the energy currency of the cell—a chemical called adenosine triphosphate (ATP)—as well as genes for mitochondrial protein synthesis.

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Filed Under: General Science
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Q:

A sample of matter must be copper if

A) atoms in the sample react with oxygen B) the sample can conduct electricity
C) each atom in the sample has 29 protons D) the sample melts at 1768k
 
Answer & Explanation Answer: C) each atom in the sample has 29 protons

Explanation:

A sample of matter must be copper if each atom in the sample has 29 protons.

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Filed Under: Chemistry
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Q:

How would you use the function memmove()?

Answer

#include "mem.h"


#include "alloc.h"


main()


{


      int area;


      char *dest;


      char src[] = "Life is the camera and you are the target"


                                  "so keep smiling always";


      area = sizeof (src);


      dest = malloc (area);


      memmove (dest, src, area);


      printf("\n%s", dest);


      printf("\n%s",src);


}

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Subject: Programming

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Q:

In which Olympics India has won the most number of medals?

A) Rio Olympics 2016 B) Beijing Olympics 2008
C) London Olympics 2012 D) Athens Olympics 2004
 
Answer & Explanation Answer: C) London Olympics 2012

Explanation:

Upto now, India has won 28 medals in Olympics from 1896 - 2016. In that

 

Rio Olympics 2016  - 02

Beijing Olympics 2008 - 03

London Olympics 2012 - 06

Athens Olympics 2004 - 01

 

Hence, India has won most number of medals in 2012 Rio Olympics.

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Q:

Electron, Proton, Neutron discovered by

A) J. J. Thomson, Ernest Rutherford & James Chadwick B) John Dalton, J.J. Thomson & Neils Bohr
C) Neils Bohr, John Dalton & J.J. Thomson D) None of the above
 
Answer & Explanation Answer: A) J. J. Thomson, Ernest Rutherford & James Chadwick

Explanation:

J. J. Thomson discovered electrons in the year 1897.

electron_discovered_by1560577555.jpg image

Ernest Rutherford discovered protons in 1911.

proton_discovered_by1560577702.jpg image

James Chadwick discovered neutrons.

neutron_discovered_by1560577801.jpg image

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Q:

Improve the bracketed part of the sentence.
He (promised to mend) his ways.

A) had a promised to mending B) promised for mending
C) was promised of mending D) No improvement
 
Answer & Explanation Answer: D) No improvement

Explanation:
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Filed Under: English
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Q:

Enzymes are produced by

A) endocrine glands B) exocrine glands
C) liver D) spleen
 
Answer & Explanation Answer: B) exocrine glands

Explanation:

Glands are of two types. The exocrine glands have ducts to carry their secretions and these secretions contain enzymes. on the other hand, endocrine glands are ductless glands and they secrete mainly horomones.

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Filed Under: Biology

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Q:

Which one of the following Articles of the Constitution of India has provision for the President to proclaim emergency

A) Article 348 B) Article 352
C) Article 356 D) Article 360
 
Answer & Explanation Answer: B) Article 352

Explanation:
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Filed Under: Indian Politics

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