Biology. A thin structure forming a dividing wall or partition between parts of a plant.
| 单词 | θ17974 |
| 释义 | the world > life > biology > substance > cell > parts of cell > [noun] > wall or membranes (16) septum1720 Biology. A thin structure forming a dividing wall or partition between parts of a plant. cell wall1840 a rigid layer present outside the cell membrane in plants, fungi, algae, and many bacteria, consisting mainly of cellulose and other… valve1852 Botany. Each of the two siliceous cell walls of a diatom, similar in shape but slightly different in size, with one overlapping the other. periplast1853 Originally: †a cell wall (obsolete). Now: spec. the wall of a unicellular organism, esp. that of an alga of the division Cryptophyta, consisting of… stroma1872 The spongy colourless framework of a red blood corpuscle or other cell. ghost1879 Biology. The cell wall or membrane of a cell that has lost its cytoplasmic contents (more fully ghost cell). Also: a bacteriophage with a head end… endoplasmic reticulum1883 Cell Biology. A network of structures within the cytoplasm of a cell; esp. (more fully endoplasmic reticulum) a system of membranes in the form of… plasma membrane1893 a semipermeable lipid bilayer with incorporated proteins which forms the external boundary of the cytoplasm of a cell (the cell membrane), or… plasmalemma1923 A lipid bilayer surrounding the cytoplasm of a cell; a plasma membrane, a cell membrane; esp. one immediately within the wall of a plant cell. unit membrane1958 a thin, semipermeable lipid bilayer with incorporated proteins, that encloses cells (= cell membrane n. at cell, n.1 compounds 3) and some… purple membrane1968 a membrane containing photoactive pigments which is produced under certain conditions in the archaebacterium Halobacterium salinarium. Subcategories:— elements of (3) — connection of (1) — transport across (1) |
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