（八）细胞的吸水和失水-分子与细胞[高中生物必修一]配资炒股网站官网
(VIII) Cell Water Uptake and Loss - Molecules and Cells [Senior High School Biology Compulsory Module 1]
李宏 湖北省十堰市郧阳中学
Li Hong Yunyang High School, Shiyan City, Hubei Province
1.细胞失水过程中，细胞液浓度增大。（√）
细胞失水过程中，水从细胞液流出，细胞液浓度增大。
During the process of cell water loss, the concentration of cell sap increases. (√)
展开剩余80%During cell water loss, water flows out of the cell sap, leading to an increase in its concentration.
2.通过观察紫色中央液泡体积大小变化，可推测表皮细胞是处于吸水还是失水状态。（√）
By observing the change in the volume of the purple central vacuole, we can infer whether epidermal cells are in a state of water uptake or water loss. (√)
当液泡体积变大，说明细胞吸水，液泡体积变小，说明细胞失水，所以通过观察紫色中央液泡体积大小变化，可推测表皮细胞是处于吸水还是失水状态。
An increase in the vacuole volume indicates cell water uptake, while a decrease indicates cell water loss. Therefore, we can infer whether epidermal cells are taking up or losing water by observing the volume changes of the purple central vacuole.
3.用吸水纸引流使0.3g/mL蔗糖溶液替换清水，可先后观察到质壁分离和复原现象。（×）
用吸水纸引流使0.3g/mL蔗糖溶液替换清水，可以观察到质壁分离现象，但是要观察到复原现象需要重新用清水替换蔗糖溶液。
Replacing clear water with a 0.3 g/mL sucrose solution via drainage with absorbent paper allows for the successive observation of plasmolysis and deplasmolysis. (×)
Replacing clear water with a 0.3 g/mL sucrose solution via drainage with absorbent paper enables the observation of plasmolysis, but to observe deplasmolysis, the sucrose solution needs to be replaced with clear water again.
4.若选用根尖分生区细胞为材料，质壁分离现象更明显。（×）
根尖分生区细胞无中央打液泡，不能发生质壁分离现象。
If meristematic cells of the root tip are used as the experimental material, the plasmolysis phenomenon will be more obvious. (×)
Meristematic cells of the root tip lack a large central vacuole and thus cannot undergo plasmolysis.
Explorer of Innovative Thinking
Author: Li Hong
Yunyang High School, Shiyan City, Hubei Province
February 13配资炒股网站官网, 2026
发布于：湖北省忠琦配资提示：文章来自网络，不代表本站观点。
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