The following ____ is the function of the bacterial capsule（）
A. Store carbon sources
B. Store phosphorus
C. Store energy
D. Anti-drying
E. Anti-chemical agents
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Bacterial flagella is composed of several parts（）
A. Flagella
B. Hair follicle
C. Matrix
D. Hook sheath
E. Fiber tube
Use _____ when observing the shape of bacterial capsule（）
A. Insert method
B. Printing method
C. Water immersion method
D. Negative staining
The content used by prokaryotic cells to store carbon sources is ___（）
A. Poly-β-hydroxybutyric acid
B. Sulfur drops
C. Metachromatic grain
D. Plasmid
The following ___ is a structure unique to prokaryotic cells（）
A. Mitochondria
B. Nuclear
C. Intermediate
D. Cell membrane
E. Spore
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