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单词 heterocyst
释义

Definition of heterocyst in US English:

heterocyst

nounˈhedərəˌsistˈhedərəˌsist
  • A large, transparent, thick-walled cell found in the filaments of certain blue-green algae and in certain fungi.

    Example sentencesExamples
    • Nitrification cannot occur in the presence of oxygen, so nitrogen is fixed in specialized cells called heterocysts.
    • In the 1970s, purified heterocysts from this strain were used to demonstrate that they are the sites of aerobic nitrogen fixation.
    • In the case of fixed nitrogen deprivation the bacteria will produce heterocysts at regular intervals, usually around ten cells apart, along the filament.
    • During growth the number of vegetative cells is increased by cell division and the space between heterocysts becomes larger.
    • These heterocysts develop from vegetative cells in a regular pattern along the filament.
 
 

Definition of heterocyst in US English:

heterocyst

nounˈhedərəˌsist
  • A large, transparent, thick-walled cell found in the filaments of certain blue-green algae and in certain fungi.

    Example sentencesExamples
    • In the case of fixed nitrogen deprivation the bacteria will produce heterocysts at regular intervals, usually around ten cells apart, along the filament.
    • These heterocysts develop from vegetative cells in a regular pattern along the filament.
    • In the 1970s, purified heterocysts from this strain were used to demonstrate that they are the sites of aerobic nitrogen fixation.
    • During growth the number of vegetative cells is increased by cell division and the space between heterocysts becomes larger.
    • Nitrification cannot occur in the presence of oxygen, so nitrogen is fixed in specialized cells called heterocysts.
 
 
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更新时间:2024/11/11 9:11:17