In this article we will discuss about some cytological slides and specimen. 1. B-Chromosome or Supernumerary Chromosome: i. The nuclei of some animals or plants contain one or more chromosomes in addition to normal chromosomes. These additional chromosomes are called B-chromosomes or supernumerary chromosomes. ii. First described by Wilson in 1905 in Metapodius, an insect, these chromosomes have now been [...]
The following points highlight the six main cell organelles of protoplasm. The cell organelles are: 1. Chloroplast 2. Mitochondria 3. Golgi Apparatus 4. Nucleus 5. Endoplasmic Reticulum 6. DNA Model. Cell Organelle # 1. Chloroplast: 1. Chloroplasts (Figs. 18, 19), responsible for the photosynthesis of the plants, are the characteristic features of the cells of green plants. 2. Around the [...]
In this article we will discuss about Endoplasmic Reticulum:- 1. Subject Matter of Endoplasmic Reticulum 2. Morphology of Endoplasmic Reticulum 3. Types 4. Origin 5. Enzymes 6. Functions. Contents: Subject Matter of Endoplasmic Reticulum Morphology of Endoplasmic Reticulum Types of Endoplasmic Reticulum Origin of Endoplasmic Reticulum Enzymes of Endoplasmic Reticulum Functions of Endoplasmic Reticulum 1. Subject Matter of Endoplasmic Reticulum: [...]