Search results
Results from the WOW.Com Content Network
Plasmolysis is the process in which cells lose water in a hypertonic solution. The reverse process, deplasmolysis or cytolysis, can occur if the cell is in a hypotonic solution resulting in a lower external osmotic pressure and a net flow of water into the cell. Through observation of plasmolysis and deplasmolysis, it is possible to determine ...
The epidermal cells of onions provide a protective layer against viruses and fungi that may harm the sensitive tissues. Because of their simple structure and transparency they are often used to introduce students to plant anatomy [1] or to demonstrate plasmolysis. [2] The clear epidermal cells exist in a single layer and do not contain ...
Cytorrhysis is the permanent and irreparable damage to the cell wall after the complete collapse of a plant cell due to the loss of internal positive pressure (hydraulic turgor pressure). [1] Positive pressure within a plant cell is required to maintain the upright structure of the cell wall. [1] Desiccation (relative water content of less than ...
Cytolysis. A red blood cell in a hypotonic solution, causing water to move into the cell. Blood cells in solutions with different osmotic pressure. Cytolysis would result in the image on the far right. Cytolysis, or osmotic lysis, occurs when a cell bursts due to an osmotic imbalance that has caused excess water to diffuse into the cell. Water ...
Lysis (/ ˈlaɪsɪs / LY-sis) is the breaking down of the membrane of a cell, often by viral, enzymic, or osmotic (that is, "lytic" / ˈlɪtɪk / LIT-ik) mechanisms that compromise its integrity. A fluid containing the contents of lysed cells is called a lysate. In molecular biology, biochemistry, and cell biology laboratories, cell cultures ...
The phragmoplast is a plant cell specific structure that forms during late cytokinesis. It serves as a scaffold for cell plate assembly and subsequent formation of a new cell wall separating the two daughter cells. The phragmoplast can only be observed in Phragmoplastophyta, a clade that includes the Coleochaetophyceae, Zygnematophyceae ...
The desmotubule is a rod-like structure with a diameter of approximately 15 nm, making it one of the mostly highly compressed biological membrane structures known. [5] Although it is usually appressed, the desmotubule can widen to form an internal lumen. [6] The membranes that form the desmotubule are derived from the cortical endoplasmic ...
G. 1. phase. Mitosis in an animal cell (phases ordered counter-clockwise), with G 1 labeled at left. The G1 phase, gap 1 phase, or growth 1 phase, is the first of four phases of the cell cycle that takes place in eukaryotic cell division. In this part of interphase, the cell synthesizes mRNA and proteins in preparation for subsequent steps ...