题目内容

The basic unit of organism structure and function is（）

A. cell
B. tissue
C. organ
D. system

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（）is a layer of membrane wrapped, containing a variety of acidic hydrolases of vesicular organelles. The main function is digest foreign matter, bacteria, or lost functioning organelles in cells

A. Mitochondrion
B. Ribosome
C. Lysosome
D. Centrosome

The（）is the hollow organ of the following organs

A. stomach
B. liver
C. kidney
D. spleen

脓状物是细菌病害常见特征（）

所有的植物病害都会造成经济损失（）