Chemistry Questions

Q:

What type of compound is Lecithin?

A) Sterol B) Phospholipid
C) Lipoprotein D) Glycolipid
 
Answer & Explanation Answer: B) Phospholipid

Explanation:

Lecithin is a Phospholipid type of compounds. The main phospholipids in lecithin from soya and sunflower are phosphatidyl choline, phosphatidyl inositol, phosphatidyl ethanolamine, and phosphatidic acid.

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Q:

The bonds in BaO are best described as

A) covalent B) ionic
C) polar D) non polar
 
Answer & Explanation Answer: B) ionic

Explanation:

In the bond formation of barium with oxygen, the valency electrons from the barium transferred to the oxygen and forms an ionic bond.

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Q:

Tertiary structure is NOT directly dependent on

A) hydrogen bonds B) ionic bonds
C) peptide bonds D) hydrophobic interactions
 
Answer & Explanation Answer: C) peptide bonds

Explanation:
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Q:

In the making of jewels, gold is usually mixed with 

A) zinc B) tin
C) copper D) aluminium
 
Answer & Explanation Answer: C) copper

Explanation:

In making jewels, gold is usually mixed with copper to make it little hard.

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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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Q:

What is a product in a chemical reaction?

Answer

In chemistry, a product is a substance that is formed as the result of a chemical reaction. In a reaction, starting materials called reactants and the ending materials are called products.

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Q:

What element is found in all organic compounds?

A) Hydrogen B) Calcium
C) Nitrogen D) Carbon
 
Answer & Explanation Answer: D) Carbon

Explanation:

Carbon is found in all organic compounds.

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Q:

In a compound, chemical energy is contained in the

A) bonds B) movement of the electrons
C) unbonded electrons D) nuclei of the atoms
 
Answer & Explanation Answer: A) bonds

Explanation:

chemical energy is contained in the chemical bonds between the reactants in the chemical compounds.

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