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Jan 29, 2024 · A chloroplast is a type of organelle known as a plastid, predominantly found in plant cells and algae. It is the site of photosynthesis, a process where light energy is converted into chemical energy, fueling the organism’s activities.
Chloroplast has a structure called chlorophyll which functions by trapping the solar energy and is used for the synthesis of food in all green plants. Produces NADPH and molecular oxygen (O 2) by photolysis of water.
- In all green plants, photosynthesis takes place within the thylakoid membrane of the Chloroplast.
- Chloroplasts are cell organelles present only in a plant cell and it includes: Stroma Inner membrane Outer membrane Thylakoid membrane Intermembran...
- The most important function of chloroplast is the production of food by the process of photosynthesis.
- Chloroplast contains a green pigment called chlorophyll which gives it a green colour.
- There are three types of plastids-chloroplast, chromoplast and leucoplast.
- The stack of lamellae or thylakoids inside a plastid is called grana.
- 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...
Jul 15, 2020 · The chloroplast is a type of cell organelle called plastids found in plants and blue-green algae. It contains the pigment chlorophyll that traps the light energy of the sun to convert them to the chemical energy of food by a process called photosynthesis.
chloroplast, structure within the cells of plants and green algae that is the site of photosynthesis, the process by which light energy is converted to chemical energy, resulting in the production of oxygen and energy-rich organic compounds.
- The Editors of Encyclopaedia Britannica
- A chloroplast is an organelle within the cells of plants and certain algae that is the site of photosynthesis, which is the process by which energy...
- Chloroplasts are present in the cells of all green tissues of plants and algae. Chloroplasts are also found in photosynthetic tissues that do not a...
- Chloroplasts are green because they contain the pigment chlorophyll, which is vital for photosynthesis. Chlorophyll occurs in several distinct form...
- Unlike most other organelles, chloroplasts and mitochondria have small circular chromosomes known as extranuclear DNA. Chloroplast DNA contains gen...
Jun 24, 2019 · Chloroplasts in plants and algae produce food and absorb carbon dioxide through the photosynthesis process that creates carbohydrates, such as sugars and starch. The active components of the chloroplast are the thylakoids, which contain chlorophyll, and the stroma, where carbon fixation takes place.
Chloroplasts are highly dynamic—they circulate and are moved around within plant cells, and occasionally pinch in two to reproduce. Their behavior is strongly influenced by environmental factors like light color and intensity.
