“探究酵母菌细胞呼吸的方式”是人教版高中生物学实验教材《分子与细胞》第五章第三节上的一个实验.此实验难度大,耗时长,笔者对其中的装置和检测试剂作了几点改进,提高了实验的科学性和可行性.一、装置的改进1.用硅胶管或乳胶管代替玻璃管连接装置.人教版教材用锥形瓶和玻璃管连接装置(如图1),而实验过程中锥形瓶A和B需要放在30~35℃的恒温水浴中加热保温,以保证酵母菌 “Exploring the Way of Breath of Yeast Cells ” is an experiment on the third chapter of Chapter 5 of “People and Pupils” in the Biology PEP of High Pok Pok Pok Pok Pok Pok. This experiment is difficult and time consuming. Testing reagents made several improvements to improve the scientific and feasibility of the experiment.One, the device improvements 1 with silicone tube or latex tube to replace the glass tube connection device.Painting teaching materials with conical flask and glass tube connection device (Figure 1), and during the experiment Erlenmeyer flask A and B need to be placed in a constant temperature water bath 30 ~ 35 ℃ heat insulation to ensure that yeast