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Which of the following is a fixed cost?
Oxygen Atoms
Fundamental components of molecules, essential for respiration in organisms and a key element in the Earth's atmosphere.
Proton Gradient
The gradient of hydrogen ions (protons) across a membrane, which is a form of potential energy used for ATP production in cells.
Photosynthesis
The process by which green plants, algae, and some bacteria transform light energy into chemical energy stored in glucose, using carbon dioxide and water and releasing oxygen as a byproduct.
Stomata
Small pores located in the epidermis of plants that provide for gas exchange for photosynthesis; each stoma is flanked by two guard cells, which are responsible for its opening and closing.
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