Cells have many small mitochondria instead of one large one to increase surface area. More surface area allows faster energy production, efficient reactions and better distribution of energy throughout the cell.
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Yes, onion root tip cells are visible under a microscope. They are not similar in structure because they are at different stages of cell division, showing structural differences.
Normal cells grow and divide through cell division. They increase in number, repair tissues and replace dead cells. This process is controlled and essential for growth and maintenance.
A diagram should show nucleus as a dark round body, ER as a network around it and rod-shaped mitochondria and chloroplasts. Label all parts clearly to represent the structure of a cell.
Yes, white flowers may contain pigments but lack coloured pigments. They reflect all light, appearing white. Sometimes, absence of pigment also causes the white colour in flowers.