In this article we will discuss about the presence of DNA in mitochondria and chloroplasts. The presence of organelle-specific DNA in mitochondria and chloroplasts was identified with certainty over three decades ago. The occurrence of a specific chloroplast DNA was first demonstrated by Chun et al. in 1963, and of mitochondrial DNA a year later […]
Presence of DNA in Mitochondria and Chloroplasts | Genetics
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Plasma Membrane: Chemical Composition and Functions | Cell
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In this article we will discuss about the chemical composition and functions of plasma membrane. Chemical Composition of Plasma Membrane: The membrane is mainly composed of lipids, proteins and carbohydrates. Water makes about 29% of total weight. Robertson (1959) proposed that plasma membrane is three-layered structure where proteins form the outer and inner layers of […]
Biology Notes on Enzymes
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Here is a compilation of notes on enzymes. After reading these notes you will learn about: 1. Introduction to Enzymes 2. Origin of Enzymes 3. Historical Landmarks 4. Meaning 5. Importance 6. Unit 7. Chemical Nature 8. Properties 9. Characteristics 10. Nomenclature 11. Classification 12. Enzymes Vs. Non-Biological Catalysts 13. Catalysts and Enzymes 14. Types […]
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