In this essay we will discuss about:- 1. Definition of Nucleus 2. Number of Nucleus 3. Position 4. Shape 5. Biochemical Analysis 6. Structure 7. Functions. Contents: Essay on the Definition of Nucleus Essay on the Number of Nucleus Essay on the Position of Nucleus Essay on the Shape of Nucleus Essay on the Biochemical Analysis of Nucleus Essay on [...]
In this article we will discuss about:- 1. Meaning of Cell Membrane 2. Appearance of Cell Membrane 3. Composition 4. Passive Diffusion or Transport across Cell Membrane. Meaning of Cell Membrane: The term was originally used by Nageli and Cramer (1855) for the membranous covering of the protoplast. The same was named plasma lemma by Plowe (1931). Plasma lemma or [...]
In this article we will discuss about:- 1. Discovery of Ribosomes 2. Occurrence of Ribosomes 3. Functions. Discovery of Ribosomes: Ribosomes were discovered by Robinson and Brown (1953) in plant cells and by Palade (1955) in animal cells. Palade (1955) also coined the term of ribosome. A large number of ribosomes occur in a cell. For example, a single cell [...]