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Jan 18, 2024 · cytoplasm, the region between the region of DNA and plasma membrane, and the cytosol, a fluid, jelly-like region inside the cell where chemical reactions take place. 3. DNA, the heredity information of cells, which can be found in a nucleus of eukaryotic cells and the a nucleoid region of prokaryotic cell. 4.
Jan 29, 2024 · Chloroplasts are cellular organelles that are responsible for the process of photosynthesis. They are the reason Earth is a flourishing, green planet that supports diverse life forms. A chloroplast is a type of organelle known as a plastid, predominantly found in plant cells and algae.
- Chloroplast Definition
- Function of Chloroplasts
- Structure of Chloroplasts
- Evolution of Chloroplasts
- Related Biology Terms
- Quiz
The chloroplast, found only in algal and plant cells, is a cell organelle that produces energy through photosynthesis. The word chloroplast comes from the Greek words khloros, meaning “green”, and plastes, meaning “formed”. It has a high concentration of chlorophyll, the molecule that captures light energy, and this gives many plants and algae a gr...
Chloroplasts are the part of plant and algal cells that carry out photosynthesis, the process of converting light energy to energy stored in the form of sugar and other organic molecules that the plant or alga uses as food. Photosynthesis has two stages. In the first stage, the light-dependent reactions occur. These reactions capture sunlight throu...
Chloroplasts, like mitochondria, are oval-shaped and have two membranes: an outer membrane, which forms the external surface of the chloroplast, and an inner membrane that lies just beneath. Between the outer and inner membrane is a thin intermembrane space about 10-20 nanometers wide. The space within the inner membrane is called the stroma. While...
Chloroplasts are thought to have become a part of certain eukaryotic cells in much the same way as mitochondria were incorporated into all eukaryotic cells: by existing as free-living cyanobacteria that had a symbiotic relationship with a cell, making energy for the cell in return for a safe place to live, and eventually evolving into a form that c...
Thylakoid– Flattened disks within the stroma of the chloroplast that contain chlorophyll and carotenoids, and perform photosynthesis.Photosynthesis– The conversion of light energy into chemical energy in the form of organic molecules.Symbiotic relationship– A close biological interaction between two different species.Algae– A large group of photosynthetic organisms including seaweeds, giant kelp, and diatoms.1. What is a difference between mitochondria and chloroplasts? A. Chloroplasts have an outer and inner membrane, while mitochondria do not. B. Chloroplasts are thought to have evolved from bacteria, while mitochondria are not. C. Photosynthesis occurs in chloroplasts, but not in mitochondria. D.Mitochondria have their own DNA; chloroplasts do not c...
Explain how the structure of the mitochondrion contributes to its function as the primary source of ATP in the cell. Explain how the structure of the chloroplast contributes to its function as the primary source of sugars for plant cells and the primary site of carbon fixation on the planet.
Oct 18, 2024 · Structures Of Organelles In Plant Cells 1. Nucleus. The nucleus is the control center of the plant cell. A double membrane surrounds it called the nuclear membrane. Inside the nucleus, it contains: Chromatin (DNA and proteins) Nucleolus (where ribosomes are made) 2. Chloroplasts
Photosynthesis consists of both light-dependent reactions and light-independent reactions. In plants, the so-called "light" reactions occur within the chloroplast thylakoids, where the ...
Jul 17, 2016 · Photosynthesis in the leaves of plants involves many steps, but it can be divided into two stages: the light-dependent reactions and the Calvin cycle. The light-dependent reactions take place in the thylakoid membrane and require a continuous supply of light energy.
