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一、容易混淆的概念 1．酶:其化学本质多为蛋白质,少数是RNA,而且可以在细胞外发挥作用。其高效性需适宜的条件;其中过酸、过碱及高温可破坏酶的结构使酶失活;而低温一般抑制活性,条件改变活性可以恢复。 2．光合作用:某些生物无叶绿体,但含色素,也能进行光合作用,如蓝藻。光合作用是自然界中最基本的物质代谢和能量代谢,自然界其它生物代谢所需的有机物都直接或者间接来自于光合作用(除少数化能合
First, the confusing concept Enzymes: Their chemical nature is mostly protein, and a few are RNA, and they can play a role outside the cell. Its high efficiency requires appropriate conditions; among them, peracid, excess alkali, and high temperature can destroy the structure of the enzyme to inactivate the enzyme, while low temperature generally inhibits the activity, and the condition changing activity can be restored. 2. Photosynthesis: Some organisms have no chloroplasts, but they contain pigments and can also perform photosynthesis, such as cyanobacteria. Photosynthesis is the most basic material metabolism and energy metabolism in nature, and the organic substances required by other organisms in nature are directly or indirectly derived from photosynthesis (except for a few chemical combinations).