What is the energy carrier of the cell?
Answers
Functions
Cells manage a wide range of functions in their tiny package — growing, moving, housekeeping, and so on — and most of those functions require energy. But how do cells get this energy in the first place? And how do they use it in the most efficient manner possible?
Where Do Cells Obtain Their Energy?
An illustration shows a flowering plant adjacent to the sun. An inset box in the lower left corner shows a close up view of a single leaf. In this box an arrow points from the sun to the leaf's surface.
Figure 1: For photosynthetic cells, the main energy source is the sun.
For photosynthetic cells, the main energy source is the sun.
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Cells, like humans, cannot generate energy without locating a source in their environment. However, whereas humans search for substances like fossil fuels to power their homes and businesses, cells seek their energy in the form of food molecules or sunlight. In fact, the Sun is the ultimate source of energy for almost all cells, because photosynthetic prokaryotes, algae, and plant cells harness solar energy and use it to make the complex organic food molecules that other cells rely on for the energy required to sustain growth, metabolism, and reproduction
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