Tag Archives | Cytoplasm

Mitochondria: Ultrastructure, Function and Reproduction | Cytoplasm

In this article we will discuss about:- 1. Ultrastructure of Mitochondria 2. Function of Mitochondria 3. Reproduction. Ultrastructure of Mitochondria: In 1953, Palade and Sjostrand independently described the ultrastructure of mitochondria. Mitochondria are bounded by an envelope consisting of two concentric membranes, the outer and inner membranes. The space between the two membranes is called inter-membrane space. A number of [...]

By |2016-07-12T13:51:03+00:00July 12, 2016|Mitochondria|Comments Off on Mitochondria: Ultrastructure, Function and Reproduction | Cytoplasm
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Ribosomes: Chemical Composition and Structure | Cytoplasm

In this article we will discuss about the chemical composition and structure of ribosomes. Chemical Composition of Ribosomes: Ribosomes are made of RNA and protein. In E. coli, they contain 34% protein and 66% RNA, while in eukaryotes, they contain 40% protein and 60% RNA. Chemical composition of large subunit is different from that of small subunit. The size and [...]

By |2016-07-12T13:51:03+00:00July 12, 2016|Ribosome|Comments Off on Ribosomes: Chemical Composition and Structure | Cytoplasm
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Plasma Membrane: Meaning, Origin and Functions | Cytoplasm

In this article we will discuss about:- 1. Meaning of Plasma Membrane 2. Chemical Composition of Plasma Membrane 3. Origin 4. Functions. Meaning of Plasma Membrane: The term 'Plasma membrane' was given by Pfeffer. It is situated just inside the cell wall and is also termed as cell membrane, plasma lemma or cytomembrane. The term 'Plasma lemma' was given by [...]

By |2016-07-12T12:27:23+00:00July 12, 2016|Eukaryotic Cell|Comments Off on Plasma Membrane: Meaning, Origin and Functions | Cytoplasm
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