A particular species of protist has obtained a chloroplast via secondary endosymbiosis. You know this because the chloroplasts have three or four membranes
A membrane-bound organelle called a plastid, or chloroplast, is a kind that primarily facilitates photosynthesis in plant and algal cells. While releasing oxygen from water in the cells, the photosynthetic pigment chlorophyll absorbs energy from sunlight, transforms it, and stores it in the energy-storage molecules ATP and NADPH.
The Calvin cycle is the mechanism by which organic molecules are produced from carbon dioxide using ATP and NADPH. Other tasks performed by chloroplasts include the creation of fatty acids, a significant amount of amino acids, and the immunological response in plants. In unicellular algae, there are just one chloroplast per cell; in plants like Arabidopsis and wheat, there are up to 100.
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