Porins are types of proteins which form pores of large sizes in the outer membranes of plastids such as chloroplast, mitochondria and the membranes in bacteria. They help in facilitating the passive transport of small-sized protein molecules.
Define a taxon. Give some examples of taxa at different hierarchical levels.
What are the steps involved in formation of a root nodule?
Name the components of the formed elements in the blood and mention one major function of each of them.
New cells generate from (a) bacterial fermentation (b) regeneration of old cells (c) pre-existing cells (d) abiotic materials
Cell is the basic unit of life. Discuss in brief.
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Porins are proteins lined hydrophilic channels present in the outer membrane of plastids, mitochondria & some bacteria. They allow passage of large bio molecules, even small sized proteins as per diffusion gradient. Aqua potions are water channels for diffusion of water molecules across the plasma membrane as per osmotic gradients.
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