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Q:

Which is the best definition of activation energy?

A) the energy required to break the bonds of reactant molecules B) the energy required to end a chemical reaction
C) the energy required to bind a substrate to an active site D) the energy required to re-form bonds in product molecules
 
Answer & Explanation Answer: A) the energy required to break the bonds of reactant molecules

Explanation:

Activation energy is a minimum amount of energy that required for the chemical reaction to happen or to take place.

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Q:

Which event occurs during interphase?

A) Centrioles appear B) Spindle fibers begin to form
C) The cell grows D) Centromeres divide
 
Answer & Explanation Answer: C) The cell grows

Explanation:

The cell carries out the metabolic processes and it grows during interphase.

The cell cycle has three phases that must occur before mitosis, or cell division happens. These three phases are collectively known as interphase. They are G1, S, and G2.

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Filed Under: Biology
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Q:

Which virus is not associated with cancer?

A) Epstein-Barr virus B) Papillomavirus
C) Retrovirus D) Hepatitis virus
 
Answer & Explanation Answer: C) Retrovirus

Explanation:

In the above given options, Retrovirus is the only virus which is not associated with cancer. Here the viruses which are associated with different types of cancer. They are:

Hepatitis virus which is associated with Liver cancer

Papillomavirus which is associated with Cervical cancer

Epstein-Barr virus which is associated with Burkitt's lymphoma.

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Filed Under: Biology
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Q:

Select the related word from the given alternatives.

Lion : Lioness :: Bull : ?

A) Animal B) Cow
C) Calf D) Dog
 
Answer & Explanation Answer: B) Cow

Explanation:
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Q:

Choose odd one out

A) Cyberspace B) Internet
C) HTML D) WWW
 
Answer & Explanation Answer: C) HTML

Explanation:
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Filed Under: Computer
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Q:

The international crisis in 2014 between Russia and Ukraine belongs to which of the following place ?

A) Crimea B) Abkhazia
C) Georgia D) Keev
 
Answer & Explanation Answer: A) Crimea

Explanation:
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Filed Under: World History

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Q:

Rockr, a cell phone from Motorola that uses Apple's iTunes software and stores up to 100 songs in its Flash memory, has been launched by 

A) Nokia B) Samsung
C) Motorola D) Bird
 
Answer & Explanation Answer: C) Motorola

Explanation:
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Filed Under: Business Awareness

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Q:

Which compound contains ionic bonds?

A) CaO B) CO2
C) NO2 D) NO
 
Answer & Explanation Answer: A) CaO

Explanation:

An ionic bond is a chemical bond between two atoms in which one atom seems to donate its electron to another atom.

 

Here in the given compounds, the compound that contains ionic bond is CaO, Calcium oxide.

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