Physiological Characteristics
1. The cell membrane and liquidubble film are selective transgenic membranes, that is, they make different substances pass through the difficulty. Water is free to pass, but many other substances cannot be or not easy to pass through. Mid-quality is not a material that can be freedom. Therefore, the entire native layer has a selection permeability. Due to in general, the raw rigidity allows the moisture to pass through more than the solute molecule. Therefore, when the cell penetration is discussed, it is often seen as a semipermeable membrane for simplicity. Thus, a mature cell having a large foamen, the cell fluid in the foame contains a lot of water, has a certain concentration, and the cell fluid can pass through the native layer and an external solution if there is a water gain between the cell fluid and the outer solution. Permeation effect. However, in fact, the primary plasma layer is not a real semipermeable film. If the cell membrane, the liquid soaked film is an absolute semi-permeable film, and the plant cannot be substantially exchanged with the outside, and life activities cannot be performed. In addition, some of the soluble substances in the bubble cannot be entered, and it is impossible to penetrate. The choice of primary layer is physiological characteristics, only living cells have, and cells are dead, and the protogenous layer becomes complete permeability, water and solute can be freedom. 2. The protoplast layer of the cell has a certain retracte, which is much larger than the retractability of the cell wall, and thus the plant cell can occur, such as a "textured wall separation" "textured wall separation restoration".
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Difference
1, plant cell engineering, remove the cell wall of plants The remaining plant cells referred to as a protoplast, and the protoplast is specifically referred to in the plant cells of the cell wall, and is actually the primary of plant cells. In the mature plant cellular, the protoplast layer is composed of cytoplasma between the cell membrane, the liquid soil, and the two membranes, and the protoplast layer does not include a cell fluid in the liquid.
2, the primary bonding is an animal and plant cells, and the protogenous layer is only in mature plant cells.