The content used by prokaryotic cells to store carbon sources is ___（）
A. Poly-β-hydroxybutyric acid
B. Sulfur drops
C. Metachromatic grain
D. Plasmid
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The following ___ is a structure unique to prokaryotic cells（）
A. Mitochondria
B. Nuclear
C. Intermediate
D. Cell membrane
E. Spore
The common forms of bacterial cells are ____（）
A. Spherical
B. Ring
C. Spiral
D. Rod shape
E. Cylindrical
The characteristic structure of the gram-negative cell wall includes ____（）
A. Peptidoglycan
B. Teichoic acid
C. Outer layer
D. Lipopolysaccharide
E. Inner wall layer
Pasteur uses the retort test to（）
A. Refute the spontaneous generation theory
B. Prove that microorganisms can cause disease
C. Analyze the chemical structure of microorganisms
D. Purify the metabolites of microorganisms
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