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Question
Kitchen of the cell is
Options
mitochondria
endoplasmic reticulum
chloroplast
golgi apparatus
Solution
chloroplast
Explanation -
Chloroplasts are present in green algae and higher plants. They have a green pigment called chlorophyll and they are involved in the photosynthesis of food. Therefore they are also known as the ‘kitchens of the cells’. Each chloroplast is bounded by two unit membranes like the mitochondria. It shows two distinct regions
(i) Grana are the main functional units of the chloroplast. They are stacks of membrane-bounded, flattened discoid sacs (called thylakoids) containing the molecules of chlorophyll.
(ii) Stroma is the homogeneous matrix in which grana are embedded. It contains a large variety of photosynthetic enzymes, starch grains DNA, and ribosomes.
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