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人类与动物在学习上的本质区别是人类的学习以概念为基础。从某种意义上说,高中生物的学习,就是分析各个概念的内涵和外延,正确地辨析一些容易混淆的概念,有利于同学们的复习迎考。1.显微结构与亚显微结构显微结构是在普通光学显微镜下能够观察到的细胞结构;亚显微结构是在电子显微镜下能够看到的直径小于0.2μm的细微结构;核糖体只能在电子显微镜下观察到,而其他细胞结构(包括细胞器、染色体等)在普通光学显微镜下即可看到。2.细胞质、细胞液、细胞内液和细胞外液细胞质是细胞膜以内细胞核以外的液体部分;细胞液是指植物液泡中的液体,其中有色素、糖类、无机盐和蛋白质等;
The essential difference between humans and animals in learning is that human learning is based on concepts. In a sense, the study of high school biology is to analyze the connotation and extension of each concept, correctly identify some concepts that are easily confused, and help review the students. 1. Microstructure and Substructure Microstructures are cell structures that can be observed under ordinary light microscopes; submicrostructures are fine structures with a diameter of less than 0.2 μm that can be seen under an electron microscope; ribosomes only Can be observed under the electron microscope, while other cell structures (including organelles, chromosomes, etc.) can be seen under ordinary light microscopes. 2. The cytoplasm, cytosol, intracellular fluid, and extracellular fluid cytoplasm are the liquid parts other than the cell nucleus within the cell membrane; the cytosol is the fluid in the vacuole of the plant, which includes pigments, carbohydrates, inorganic salts, and proteins;