Q:

Polynucleotide chain of DNA contains

A) a nitrogenous base, deoxyribose sugar and phosphate group	B) a nitrogenous base, ribose sugar and phosphate group
C) deoxyribose sugar, ribose sugar and phosphate group	D) a nitrogenous base and phosphate group only

Answer & Explanation Answer: A) a nitrogenous base, deoxyribose sugar and phosphate group

Explanation:

The two DNA strands are called polynucleotidesbecause they are composed of simpler monomer units called nucleotides. Eachnucleotideis composed of one of four nitrogen-containingnucleobases (cytosine, guanine, adenine or thymine), a sugar called deoxyribose, and a phosphate group.

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Q:

Insects that transmit diseases are known as

A) Pathogens	B) Vectors
C) Drones	D) Scalars

Answer & Explanation Answer: B) Vectors

Explanation:

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Q:

In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word.

A) annunciation	B) anunciation
C) annunceation	D) anunceation

Answer & Explanation Answer: A) annunciation

Explanation:

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Q:

In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word.

A) svivelling	B) swiveling
C) swivelling	D) sviveling

Answer & Explanation Answer: C) swivelling

Explanation:

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Q:

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

Cross that bridge when you come to it.

A) It is always better to plan for an eventuality rather face it when you are unprepared.	B) Deal with a problem when and if it arises.
C) A bridge is a path to a different world.	D) If you are brave then you can overcome all hurdles.

Answer & Explanation Answer: B) Deal with a problem when and if it arises.

Explanation:

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Q:

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

under the weather

A) changing moods like weather	B) a situation changes so fast that it leaves one unprepared
C) slightly unwell	D) raining heavily

Answer & Explanation Answer: C) slightly unwell

Explanation:

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Q:

Which of the following planets has the highest revolutionary motion?

A) Mercury	B) Venus
C) Mars	D) Jupiter

Answer & Explanation Answer: D) Jupiter

Explanation:

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Filed Under: General Science
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Q:

The source of energy in an ecosystem is

A) Sugar produced in photosynthesis	B) ATP
C) Green plants	D) Sun

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