Virus have both an extracellular and an intracellular state. A virus is a submicroscopic particle containing nucleic acid surrounded by protein and occasionally containing other macromolecular components. In this extracellular state, the virus particle, also called the virion, is metabolically inert and does not carry out respiratory or biosynthetic
一、 DEFINITION Fundamental metabolism: water metabolism, mineral nutrition ,photosynthesis, repiration Seed germination,growth, differentiation, flower ing,fertilization
2.4 Physiological Diversity of Microorganisms 2.5 Prokaryotic Diversity 2.6 Eukaryotic Microorganisms 4.4. Cell Morphology and the Significance of BeingSmall 4.5 Cytoplasmic Membrane: Structure 4.6 Cytoplasmic Membrane: Function 4.8 The Cell Wall of Prokaryotes: Peptidoglycan andRelated Molecules 4.9 The Outer Membrane of Gram-Negative Bacteria