d.) a plant cell is the answer
Photosynthesis in plants occurs in two stages. These stages are known as the light-dependent reactions and the Calvin Cycle.
The first stage of photosynthesis is the light dependent reactions. These reactions take place on the thylakoid membrane inside the chloroplast. During this stage light energy is converted to ATP (chemical energy) and NADPH (reducing power).
<span>The second stage of photosynthesis is the Calvin Cycle. These reactions occur in the stroma of the chloroplast. Energy from ATP and electrons from NADPH are used to convert carbon dioxide into glucose and other products.</span>
<span>The </span>function of the valves<span> in the peripheral </span>veins<span> is to ensure that the overall movement of blood in the </span>veins<span> is in the right direction, toward the heart. This is especially important in the </span>legs<span>, where the blood must flow a relatively long distance against gravity. </span>
<span>representative respiratory reflexes? Not so sure so confirm online
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