Notes on Chromosomes. After reading this article you will learn about: 1. Introduction to Chromosomes 2. Shape of Chromosomes 3. Size 4. Number 5. Morphology 6. Characteristic Features 7. Classification 8. Special Types 9. Some Other Chromosomes 10. Role of Chromosomes in Heredity 11. Change in Chromosomes Structure. Contents: Notes on Introduction to Chromosomes Notes on the Shape of Chromosomes [...]
Mycoplasmas are tiny, virus-like non-motile prokaryotic organisms. They are the simplest and smallest known organisms capable of growing on cell free laboratory culture media containing sterols. Mycoplasmas lack definite cell wall and are characteristically delimited by a distinct, soft, flexible trilaminar unit membrane of lipoprotein. Because of the soft and plastic membrane they can assume a variety of shapes and [...]
In this article we will discuss about the Structure of Cyanobacteria (Blue Green Algae). Blue-green algae are the most primitive organisms in the plant kingdom and show typical prokaryotic organization (Fig. 1.13). A typical cell of blue-green algae is composed of the following components: 1. Outer cellular covering. 2. Cytoplasm. 3. Nucleic material. 1. Outer Cellular Covering: The outer covering [...]