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 [...]
In this article we will discuss about the Nucleus of Controlling Centre of Cell. The protoplast of eukaryotic cell contains prominent spherical or subspherical body called the nucleus (Pl.—nuclei) which controls all the life activities. As a rule, there is only one nucleus in one cell, but there are certain exceptions to this general rule. There may be many nuclei [...]