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以下是制作和观察洋葱表皮细胞临时装片的图示,请分析回答:( (1 )切取洋葱鳞片叶时常有刺激物喷出,这些刺激物来自细胞结构中的 ;洋葱表皮取自鳞片叶表层,属于生物体结构层次中的 。 (2)图一中,制作临时装片正确的操作顺序是: [3] → [4] → [ ] → [ ] 。 (3)要将图二中的甲转换为乙,应转动 ,换用 (填 “低倍”或“高倍”)物镜观察。 (4)视野中细胞内近似球形的结构是 ,该结构中储存着控制细胞生命活动的 物质。
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