What is the purpose of the intermembrane space in chloroplast?
The intermembrane space is a compartment of very small volume since the outer and inner membranes are in very close proximity. Only a relatively small number of components of the intermembrane space are known, most of which are required for mitochondrial biogenesis or have a function in energy metabolism.
What is the role of chloroplast in photosynthesis process?
The most important function of the chloroplast is to synthesise food by the process of photosynthesis. Absorbs light energy and converts it into chemical energy. 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.
Which part of the chloroplast is involved in photosynthesis?
thylakoid membranes
Photosynthesis occurs in the chloroplast, an organelle specific to plant cells. The light reactions of photosynthesis occur in the thylakoid membranes of the chloroplast. Electron carrier molecules are arranged in electron transport chains that produce ATP and NADPH, which temporarily store chemical energy.
How does the intermembrane space function in photosynthesis?
The inner membrane separates the stroma from the intermembrane space and regulates the passage of molecules into and out of the chloroplast. Intermembrane Space: space between the outer membrane and inner membrane. Chlorophyll: a green photosynthetic pigment within the chloroplast grana that absorbs light energy.
What is the purpose of intermembrane space?
The intermembrane space located between outer and inner membrane contains proteins have a critical role in mitochondrial energetics and apoptosis (process of programmed cell death). Unlike the outer membrane, the inner membrane is highly impermeable to the ions and molecules.
What is stoma in chloroplast?
Stomates (also termed stomata) are specialized epidermal cells generally found on leaves, but sometimes on stems. Stomata consist of two chloroplast-containing cells, the guard cells, which, by changes in turgor pressure, can increase or decrease the size of the opening between them, the stoma (Figure 3.14).
Which part of a plant is primarily responsible for photosynthesis?
In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.
In what parts of the chloroplast do the two phases of photosynthesis occur?
The light-dependent reactions take place in the thylakoid membranes in the granum (stack of thylakoids), within the chloroplast. Figure: The two stages of photosynthesis: Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle (light-independent reactions).
What structure in the chloroplast performs the same function that the intermembrane space does in the mitochondria?
In terms of its role in generation of metabolic energy, the thylakoid membrane of chloroplasts is thus equivalent to the inner membrane of mitochondria.
What is the purpose of the proton gradient in the electron transport chain?
The proton gradient produced by proton pumping during the electron transport chain is used to synthesize ATP. Protons flow down their concentration gradient into the matrix through the membrane protein ATP synthase, causing it to spin (like a water wheel) and catalyze conversion of ADP to ATP.
What are 3 functions of chloroplast?
Structure: The chloroplast is surrounded by two unit membranes,each about 40 to 60 A° thick. The space between two membranes is called periplastidal space.
Which best describes the function of chloroplast?
Thylakoid – Flattened disks within the stroma of the chloroplast that contain chlorophyll and carotenoids,and perform photosynthesis.
What are the parts and functions of the chloroplast?
Chloroplasts are the green plastids which act as photosynthetic apparatus. In higher plants, they are mostly oval, spherical or discoid. The major parts of chloroplast are: 1. Envelop: Each chloroplast is bounded by two smooth selectively permeable cytoplasmic membranes with an inter-membrane space which is filled with fluid.
What are facts about chloroplasts?
Outer membrane – The outside of the chloroplast is protected by a smooth outer membrane.