Questions

Q:

Origins of genetic variation

A) intragenic recombination B) mutation
C) reticulation D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

Random mutations are the ultimate source of genetic variation. Mutations are likely to be rare and most mutations are neutral or deleterious, but in some instances, the new alleles can be favored by natural selection. Polyploidy is an example of chromosomal mutation.

 

Mutations are changes in the DNA. A single mutation can have a large effect.

1) mutation - an alteration in DNA sequence, various types

2) intragenic recombination - results in entirely new associations of genes not present in either parental genome.


Two forms of intragenic recombination:

a) crossing over
b) independent assortment
3) reticulation – acquisition of genetic material from unrelated or relatively unrelated sources (e.g., hybrid species, horizontal gene transfer).

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3 3103
Q:

Covalent bonds hold atoms together because they 

A) fill shells without giving atoms much charge B) bring electrons closer to protons
C) Both A & B D) use forces between nuclei as well as forces between electrons
 
Answer & Explanation Answer: C) Both A & B

Explanation:

Covalent bonds hold atoms together because the attraction between the positively charged nuclei and the negatively charged shared electrons is greater than the repulsions between the nuclei themselves.

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Q:

Which city is hosting 2020 summer Olymic games?

A) Athens B) Tokyo
C) Pyeongchang D) Beijing
 
Answer & Explanation Answer: B) Tokyo

Explanation:

2020 summer Olymic games to be held in Tokyo, Japan.

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Q:

Which naxal affected district police has been selected for the International Association of Chiefs of Police (IACP) award this year for its community policing initiative focusing on the rehabilitation of Naxals  ?

A) Bastar Police, Chhattisgarh B) Lucknow Police, UP
C) Patna Police , Bihar D) Jaipur Police, Rajasthan
 
Answer & Explanation Answer: A) Bastar Police, Chhattisgarh

Explanation:
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5 3102
Q:

Which among the following is NOT a function of RBI? 

A) Serve as debt manager to other banks B) To work as monetary authority and implement its Monetary Policy
C) Serve as banker to central and state governments D) To serve as issuer of bank notes
 
Answer & Explanation Answer: A) Serve as debt manager to other banks

Explanation:

Serve as debt manager to other banks is not a function of RBI Bank.

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Q:

Energy produced in nuclear reaction is given by

A) Charle's law B) Grahm's law
C) Gay - Lussac's law D) Einstein's law
 
Answer & Explanation Answer: D) Einstein's law

Explanation:
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2 3102
Q:

ATP generally energizes a cellular process by

A) direct chemical transfer of a phosphate group B) becoming oxidized
C) releasing heat upon hydrolysis D) direct chemical transfer of a sugar group
 
Answer & Explanation Answer: A) direct chemical transfer of a phosphate group

Explanation:

ATP generally energizes a cellular process by direct chemical transfer of a phosphate group.

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2 3101
Q:

How long are profissional Golf tour players alloted per shot

A) 45 seconds B) 25 seconds
C) 1 minutes D) 2 minutes
 
Answer & Explanation Answer: A) 45 seconds

Explanation:
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