Interior of chloroplast is divided into the heterogeneous structure, embedded in the matrix known as:
Correct answer: A. Grana
- A. Grana
- B. Thylakoids
- C. Stroma
- D. Cisternae
Explanation
Grana are stacks of thylakoids where the light-dependent reactions take place, thylakoids are individual membrane-bound structures containing the photosynthetic pigments, and the stroma is the gel-like fluid surrounding the grana where the light-independent reactions occur. The arrangement of thylakoids in grana increases the surface area available for light absorption, optimizing the efficiency of photosynthesis.
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Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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