安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- Bacteria - Wikipedia
Bacteria play a vital role in many stages of the nutrient cycle by recycling nutrients and the fixation of nitrogen from the atmosphere The nutrient cycle includes the decomposition of dead bodies; bacteria are responsible for the putrefaction stage in this process
- Bacterial taxonomy - Wikipedia
Bacteria were first observed by Antonie van Leeuwenhoek in 1676, using a single-lens microscope of his own design [3] He did not distinguish bacteria as a separate type of microorganism, calling all microorganisms, including bacteria, protists, and microscopic animals, "animalcules"
- Microorganism - Wikipedia
Bacteria have an enclosing cell wall, which provides strength and rigidity to their cells They reproduce by binary fission or sometimes by budding, but do not undergo meiotic sexual reproduction
- Bacterial cell structure - Wikipedia
Because of the simplicity of bacteria relative to larger organisms and the ease with which they can be manipulated experimentally, the cell structure of bacteria has been well studied, revealing many biochemical principles that have been subsequently applied to other organisms
- List of bacteria genera - Wikipedia
This article lists the genera of the bacteria The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) [1] and National Center for Biotechnology Information (NCBI) [2]
- Bacteria - Simple English Wikipedia, the free encyclopedia
Bacteria are made up of one cell, so they are a kind of unicellular organism They were one of the earliest forms of life, and are simple single-celled organisms
- Pathogenic bacteria - Wikipedia
Pathogenic bacteria are bacteria that can cause disease [1] This article focuses on the bacteria that are pathogenic to humans Most species of bacteria are harmless and many are beneficial but others can cause infectious diseases The number of these pathogenic species in humans is estimated to be fewer than a hundred [2] By contrast, several thousand species are considered part of the gut
- Evolution of bacteria - Wikipedia
Defining bacteria Bacteria are prokaryotic microorganisms that can either have a bacilli, spirilli, or cocci shape and measure between 0 5-20 micrometers They were one of the first living cells to evolve [9] and have spread to inhabit a variety of different habitats including hydrothermal vents, glacial rocks, and other organisms
|
|
|