What is the difference between Grana and Thylakoid. Grana are the stacks, which are formed by combining 2 to thylakoids together. These grana are connected with each other by stromal thylakoids. Connecting each granum by stromal thylakoids allow the functioning of all grana as a unit during photosynthesis. The membranes of thylakoid and stromal thylakoid are responsible for the occurrence of light reaction of photosynthesis.
The space between grana and inner membrane of the chloroplast is called stroma. Dark reaction of the photosynthesis occurs in the stroma of chloroplast. A single chloroplast contains 10 to grana. Granum inside the chloroplast is shown in figure 1.
Figure 1: Granum in Chloroplast. Thylakoid is the little, round, flat, pillow-shaped things inside the chloroplast. Thylakoid is a membrane-bound structure. The space between thylakoid membrane is called thylakoid lumen.
The functional parts of the chloroplast are its membrane and the lumen. The light-trapping green pigment, chlorophyll is found in the thylakoid membrane, held by the membrane proteins.
Chlorophylls are organized into photosystem 1 and photosystem 2 on the thylakoid membrane. The light energy of the sunlight is converted into electrical energy by chlorophyll.
The electrical energy in the form of high energy electrons is passed through membrane proteins from one to another, providing the power to pump protons from stroma into thylakoid lumen. When these pumped proteins are rushed back into the stroma, energy is released, which is readily used by the enzyme, ATP synthase by synthesizing ATP. Membrane proteins in the thylakoid are shown in figure 2. Grana: Grana are the stacks of thylakoids inside the chloroplast.
Thylakoid: Thylakoid is the pillow-shaped compartments in the chloroplast. Grana: Grana organize thylakoids together and connect them together by stromal thylakoids in order to allow the functioning of thylakoids as a unit. Grana and thylakoid are two structures found inside the chloroplast, involved in the photosynthesis.
Grana and thylakoids are two components found in chloroplast and are involved in the light reaction of photosynthesis. Thylakoids are membrane bound compartments or disks where the light reaction takes place. Grana are the stacks of these thylakoid disks formed inside the chloroplast. This is the key difference between grana and thylakoids.
Overview and Key Difference 2. What are Grana 3. What is Thylakoid 4. Similarities Between Grana and Thylakoid 5. Grana singular — Granum are stacks of membrane disks known as thylakoid membranes, and they are distributed in the stroma of the chloroplast.
They are microscopic and can be observed under the light microscope and oval shaped stacks. The grana are connected by lamellae, a membrane that bridges the grana, and also participates in the light reaction process. Organization of thylakoids into grana increases the surface area for light dependent photosynthesis in plants, thereby increasing the efficiency of the process. Thylakoids are disk shaped membranous structures which are in the chloroplast stroma and are the main compartments that participate in the light dependent reaction of photosynthesis.
They are microscopic and are mainly observed via electron micrography. They contain stores of chlorophyll which capture the solar energy to initiate the light reaction of photosynthesis via photosystems I and II. When light strikes these pigments, they split water and release oxygen through the process of photolysis.
The electrons released from this reaction hit the photosystem 2, and are transferred to photosystem 1 via electron carriers. The electrons are further excited and are boosted to higher energy states. Photosynthesis is a vital process for maintaining the energy flow in organisms via food chains. It is the only independent process in which carbon dioxide can be converted to glucose and energy. Chloroplasts are the structural sites of photosynthesis, where sunlight is converted into food by plants.
This process is carried out in two main ways: the light dependent reaction and the light independent or the dark reaction. Grana are thylakoids are two structures in chloroplasts which are involved in photosynthesis.
Thylakoids are the number of flattened sacs inside a chloroplast, bound by pigmented membranes on which the light reactions of photosynthesis take place. Grana are the stacks of thylakoids organized inside the stroma to increase the surface area for light dependent photosynthesis.
Light dependent reactions of photosynthesis mainly occur in thylakoid membranes.
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