Just like the structure of the mitochondria was important to its ability to perform aerobic cellular respiration, the structure of the chloroplast allows the process of photosynthesis to take place. Both the light-dependent reactions and the Calvin cycle take place inside of the chloroplast. Unless otherwise noted, images on this page are licensed under CC-BY 4. Text adapted from: OpenStax , Concepts of Biology. OpenStax CNX. Skip to content In plants, photosynthesis takes place primarily in leaves, which consist of many layers of cells and have differentiated top and bottom sides.
Figure 1 Not all cells of a leaf carry out photosynthesis. Cells within the middle layer of a leaf have chloroplasts, which contain the photosynthetic apparatus. Figure 2 Tomato leaf stomate singular of stomata. The combination of positive charges and proton concentration in the thylakoid lumen creates an electrochemical gradient that provides the physical energy necessary for ATP production. He holds an M. You can see samples of his work at ericbank. They can also be found within cyanobacteria as well as in plant and algae chloroplasts.
Describe What a Photosystem Does for Photosynthesis. Structural Characteristics of Blue-Green Algae. What Is the Role of Pigments in Photosynthesis? Two Stages of Photosynthesis. What Are the Two Prokaryotic Kingdoms? What Is the Photosynthesis Equation? Sequence Stages in Photosynthesis. How to Convert Lux to Candela. Organelles Involved in Photosynthesis. Components of Photosynthesis. According to DNA evidence, the eukaryotic organisms that later became plants likely added the photosynthetic pathway in this way, by acquiring a photosynthetic bacterium as an endosymbiont.
As suggested by this hypothesis, the two organisms developed a symbiotic relationship over time, the larger organism providing the smaller with ample nutrients and the smaller organism providing ATP molecules to the larger one. Eventually, the larger organism developed into the eukaryotic cell, the smaller organism into the chloroplast. Nonetheless, there are a number of prokaryotic traits that chloroplasts continue to exhibit.
Their DNA is circular, as it is in the prokaryotes, and their ribosomes and reproductive methods binary fission are more like those of the prokaryotes. License Info. Image Use. Custom Photos. Site Info.
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