The below mentioned article provides notes on autotrophic metabolism. Autotrophy generally means the ability of organisms to use inorganic carbon in the form of CO2 as the sole source of carbon for synthesizing organic compounds necessary to build cell components. This ability is also sometimes called carbon-autotrophy to distinguish the ability of some organisms to […]
Biology Notes on Autotrophic Metabolism
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Transport of Molecules across Cell Membrane
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The following points highlight the five processes involved in transport of molecules across cell membrane. The processes are: 1. Passive Diffusion 2. Facilitated Diffusion 3. Active Transport 4. Group Translocation 5. Ion Transport through Ionophores. Process # 1. Passive Diffusion: By passive diffusion, molecules move across the membrane without interacting with any specific carrier protein […]
Biosynthesis of Various Types of Nucleotides
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In this article we will discuss about the biosynthesis of various types of nucleotides:- 1. Pyrimidine Nucleotides 2. Purine Nucleotides. 1. Pyrimidine Nucleotides: Biosynthesis of pyrimidine nucleotides begins with condensation of a carbamyl residue of carbamyl phosphate with aspartic acid to produce carbamyl aspartate and inorganic phosphate. Carbamyl aspartate is dehydrated and cyclized to dihydro-orotic […]
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