Question

Which element from the following is exist at the centre of the chloroplast molecule?
A)Na
B)Mg
C)Ca
D)Mn

Answer 1

Magnesium ion exist at the centre of the chloroplast molecule.

Option: B

Explanation:

• The chlorophyll can be of various types. They can be of chlorophyll a as chlorophyll b type. The chlorophyll can have a head tail and a centre.

• The centre of all types of chlorophyll contains magnesium ion. The tail is always composed of a long hydrocarbon chain.  

• The length and the structure of the hydrocarbon may vary from various molecules. The head consists of other types of molecules like oxygen, nitrogen and carbon. This is usually hydrophilic.

Learn more about Magnesium

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Answer 2

Option (B) is Right Answer

Explanation:

   (B) Mg is right answer

• Magnesium is the central element in chlorophyll, the green color in plants
• When the plant is given full-range light, the chlorophyll atoms retain the red and blue segments of the light spectrum, and the green light is reflected from the leaves.That is the reason plants seem green to the human eye  .For example, ATP (adenosine triphosphate), the main source of energy in cells, must binds to a magnesium particle so as to be organically active
• Magnesium plays a role in the stability of all polyphosphate compounds in the cells, incorporating those related with the synthesis of DNA and RNA