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 [...]
The eukaryotic cells are found in most of the algae, fungi, protozoa and all the higher plants and animals. Irrespective of their variable shapes and sizes, these cells display the following fundamental components (Fig 1.15): 1. Cell wall and Plasmalemma or cytoplasmic membrane, 2. Cytoplasm and 3. Nucleus. The eukaryotic cells contain extensive internal membrane systems such as endoplasmic reticulum [...]
In this article we will discuss about the subject-matter and structure of Ribosomes present in the cells of plant and animals. Subject-Matter of Ribosomes: In the cytoplasm of the cell there are found particles composed of RNA (ribonucleic acid) and proteins. These are called ribosomes. These particles occur in all the cells that synthesize proteins and they are involved in [...]