Questions

Q:

In isotopes the number of neutrons are

A) same B) different
C) both D) none
 
Answer & Explanation Answer: B) different

Explanation:
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Filed Under: Chemistry

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Q:

What is a Safe State and what is its use in deadlock avoidance?

Answer

When a process requests an available resource, system must decide if immediate allocation leaves the system in a safe state. System is in safe state if there exists a safe sequence of all processes. Deadlock Avoidance : ensure that a system will never enter an unsafe state.

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Q:

Harmful bacteria in drinking water cannot be destroyed by 

A) Chlorination B) boiling
C) adding caustic soda D) ozonisation
 
Answer & Explanation Answer: C) adding caustic soda

Explanation:

Water containing caustic soda cannot be used for drinking

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Filed Under: Chemistry

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Q:

Missing letters puzzle

Answer

Answer: J


Explanation:   Start with the letter J in the top left square, and move clockwise around the other squares. Letters follow the alphabetic sequence, skipping 4 letters at a time. Start with the X in the inner square in the top left, and move clockwise. These inner letters also follow the alphabetic sequence, skipping 5 letters at a time

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Q:

Why are yeast cells frequently used as hosts for cloning?

A) they are eukaryotic cells B) they do not have plasmids
C) only yeast cells allow the gene to be cloned D) they easily form colonies
 
Answer & Explanation Answer: A) they are eukaryotic cells

Explanation:

If you were to produce a protein in bacterial cloning systems, you would not get the same post transcriptional and post translational modifications because the prokaryotic and eukaryotic systems work differently on the modifications.

Thus human recombinant protein genes are usually cloned in yeast cells. Also since they have a short generation time, they can be easily culture.

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Filed Under: Biology
Exam Prep: AIEEE , Bank Exams
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Q:

Which best summarizes the concept of natural selection?

A) the fittest organisms survive and reproduce B) an organism will always adapt to its environment
C) an organism will always mutate to survive D) a mutation always makes a species fitter
 
Answer & Explanation Answer: A) the fittest organisms survive and reproduce

Explanation:

Natural selection is the differential survival and reproduction of individuals due to differences in phenotype. It is a key mechanism of evolution, the change in the heritable traits characteristic of a population over generations.

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Filed Under: Biology
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Q:

Who are winners of 2016 Kabaddi World Cup ?

A) Iran B) Australia
C) India D) Bangladesh
 
Answer & Explanation Answer: C) India

Explanation:
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Filed Under: Sports

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Q:

Dhruv Sharma Who Died in July 2017 Belongs To Which Field ?

A) Politics B) Acting
C) Photography D) Music
 
Answer & Explanation Answer: B) Acting

Explanation:
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Filed Under: Famous Personalities
Exam Prep: Bank Exams , CAT
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