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单词 thylakoid
释义

Definition of thylakoid in English:

thylakoid

noun ˈθʌɪləkɔɪdˈTHīləˌkoid
Botany
  • Each of a number of flattened sacs inside a chloroplast, bounded by pigmented membranes on which the light reactions of photosynthesis take place, and arranged in stacks or grana.

    as modifier thylakoid membranes
    Example sentencesExamples
    • The pigment proteolipids of thylakoids have both a photosynthetic function and a role in membrane structure.
    • Chloroplasts at the proximal end of the cell also have grana, but with up to nine thylakoids per stack.
    • Affected leaf tissue is white and the plastids lack thylakoids and chlorophyll.
    • This organelle contains a complex membrane system, the thylakoids, in which the photosynthetic machinery is located.
    • Chloroplast envelopes, stacked grana and unstacked stroma thylakoids were well-defined.

Origin

1960s: from German Thylakoid, from Greek thulakoidēs 'pouch-like', from thulakos 'pouch'.

 
 

Definition of thylakoid in US English:

thylakoid

nounˈTHīləˌkoid
Botany
  • Each of a number of flattened sacs inside a chloroplast, bounded by pigmented membranes on which the light reactions of photosynthesis take place, and arranged in stacks or grana.

    as modifier thylakoid membranes
    Example sentencesExamples
    • The pigment proteolipids of thylakoids have both a photosynthetic function and a role in membrane structure.
    • This organelle contains a complex membrane system, the thylakoids, in which the photosynthetic machinery is located.
    • Chloroplasts at the proximal end of the cell also have grana, but with up to nine thylakoids per stack.
    • Chloroplast envelopes, stacked grana and unstacked stroma thylakoids were well-defined.
    • Affected leaf tissue is white and the plastids lack thylakoids and chlorophyll.

Origin

1960s: from German Thylakoid, from Greek thulakoidēs ‘like a pouch’, from thulakos ‘pouch’.

 
 
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更新时间:2024/12/23 23:23:00