thylakoid

American  

[thahy-luh-koid] / ˈθaɪ ləˌkɔɪd /

noun

Cell Biology.

1. a flattened sac or vesicle lined with a pigmented membrane that is the site of photosynthesis, in plants and algae occurring in interconnected stacks constituting a granum of the chloroplast, and in other photosynthesizing organisms occurring either singly or as part of the cell membrane or other structure.

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thylakoid Scientific  

/ thī′lə-koid′ /

1. A saclike membrane that contains the chlorophyll in cyanobacteria and in the chloroplasts of plant cells and green algae. In chloroplasts, thylakoids are arranged in stacks called grana.

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Etymology

Origin of thylakoid

1965–70; < German Thylakoid < Greek thȳlakoeidḗs resembling a bag, equivalent to thȳ́lak ( os ) sack + -oēidēs -oid

Example Sentences

Firstly, the pH value of the medium surrounding the thylakoid membrane reacts highly dynamically to light changes.

From Science Daily • Apr. 8, 2024

These structures, called thylakoid membranes, are the oldest ever discovered.

From Science Daily • Jan. 5, 2024

This discovery puts into perspective the role of cyanobacteria with thylakoid membranes in early Earth oxygenation.

From Science Daily • Jan. 5, 2024

Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH.

From Textbooks • Jun. 9, 2022

The inner membrane contains components of the light dependent reactions as well as photosystems I and II. The thylakoid membrane contains the chemicals needed for the Calvin cycle and also the enzyme NAD+ reductase.

From Textbooks • Jun. 9, 2022