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Sciences > Cellular Biology Membranes and cell diffusion: understanding the phenomenon

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Diffusion is the movement of particle from outside to inside through a membrane cell of living thing, vice-versa, the movement of the particle is from an area which has a high concentration gradient to an area which has a low concentration gradient. There are three kind of diffusion first passive transport diffusion for a sh... More..

Sciences > Cellular Biology Understanding mitosis and meiosis

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On multicellular eukaryotes there are two types of cell division, mitotic (consist of mitosis and cytokinesis) and meiosis, the major use of mitosis is for division at autonomous cell, meiosis is for division at reproduction cell. The differences between mitosis and meiosis are: a. Mitosis Mitotic is one process from ... More..

Sciences > Cellular Biology Osmosis and cell membranes

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Osmosis can't be explained separate from membrane cell because osmosis is the diffusion of water across membrane. Although osmosis is kind of diffusion but there are a big differences between diffusion and osmosis. For a short diffusion is particle moving across the membrane from high concentration gradient to low concentrat... More..

Sciences > Cellular Biology An overview of plant cell walls

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The cell wall is the organelle that distinguishes the animal cell and plant cell, because those cell walls only locate at plant cell. Cell wall consist of cellulose embedded in a matrix of polysaccharides and proteins, it 10 - 100 times more thicker than plasma membrane that make this cell very rigid and strong, so cell wall ... More..

Sciences > Biology (Other) Do you believe in the Primordial Soup theory?

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The primordial soup consist of gas methane, ammonia, hydrogen and water. After some chemical reaction which happening because of lightning and intense UV radiation that chemical compound becomes an amino acid. After that there is a missing link to make amino acid become proteins and nucleic acid, which scientist only predict ... More..

Michael Gotama

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1. Membranes and cell diffusion: understanding the phenomenon
2. Osmosis and cell membranes
3. Understanding mitosis and meiosis
4. An overview of plant cell walls
5. Do you believe in the Primordial Soup theory?

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