CLASS 7 · LEARNING KNOWLEDGE
Bacteria and unicellular organisms – basic principles
How it works
Bacteria are unicellular microorganisms without a cell nucleus (prokaryotes), while other unicellular organisms such as amoebae or Euglena have a cell nucleus (eukaryotes). They differ in structure, way of life, and importance for humans and the environment. Bacteria can be beneficial (e.g. intestinal flora) or harmful (pathogens). Unicellular organisms perform important ecological functions, for example as producers or decomposers. They usually reproduce by cell division and are found in a wide variety of habitats.
Note
Bacteria are prokaryotic unicellular organisms without a cell nucleus, whereas other unicellular organisms (e.g. amoebae) are eukaryotic with a cell nucleus. Both groups show different ways of life and ecological roles.
Bacteria are prokaryotic unicellular organisms without a cell nucleus, whereas other unicellular organisms (e.g. amoebae) are eukaryotic with a cell nucleus. Both groups show different ways of life and ecological roles.
An example
Which feature distinguishes bacteria from amoebae?
Bacteria do not have a cell nucleus, amoebae do. This is a fundamental difference between prokaryotes (bacteria) and eukaryotes (amoebae).
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50 Exercises
To the learning unit →Own explanation and own practice exercises by AmyMath. Subject reference framework: Biology. The topic assignment may vary by federal state.