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Thylakoid

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Thylakoid
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Thylakoid
A thylakoid is part of an internal membrane system of chloroplasts folded repeatedly into a stack of disks called grana.

thylakoids The specialized membrane structures in which photosynthesis takes place. Internal membranes in the chloroplast where the light reaction chemicals are embedded. Collections of thylakoids form the grana. PICTURE ...

thylakoid
(thy-luh-koid) [Gk. thylakos, a small bag]
A flattened membrane sac inside the chloroplast, used to convert light energy to chemical energy.
thymus ...

The Thylakoid Membrane
Chloroplasts contain a system of thylakoid membranes surrounded by a fluid stroma.
Link to page on chloroplast structure.
Six different complexes of integral membrane proteins are embedded in the thylakoid membrane.

Thylakoid membrane: light-dependent → large surface area
Associated with chlorophyll, accessory pigments, ETC, enzymes
Grana: stacks of thylakoid membranes ...

Thylakoids are membranous disk-like structures that are stacked together in larger structures that resemble stacks of coins. Chlorophyll and carotenoid pigments are located in the membranes of the thylakoids.

Thylakoids are stacked like pancakes in stacks known collectively as grana. The areas between grana are referred to as stroma. While the mitochondrion has two membrane systems, the chloroplast has three, forming three compartments.

thylakoid membrane A saclike photosynthetic membrane in chloroplasts; stacks of thylakoids form the grana.
thylakoid The lamellar structure of the grana of chloroplasts.
thymine A pyrimidine base occurring in DNA but not in RNA.

thylakoids - flattened sac of membrane in a chloroplast that contains pigment and carries out the light-gathering reactions of photosynthesis ...

It is located in thylakoid membranes.
B.
It is involved in the oxidation of water.

The light reactions of photosynthesis occur in the grana (thylakoid membranes) of the chloroplasts of eukaryotic cells.

Light travels as packets of energy called photons and is absorbed in this form by light-absorbing chlorophyll molecules embedded in the thylakoid disks.

One thylakoid stack is called a granum. The thylakoids have chlorophyll molecules on their surface. That chlorophyll uses sunlight to create sugars. The stacks of sacs are connected by stromal lamellae.

Granum a stack of thylakoids within a chloroplast
(granum = grain)
H
Hamstrings muscles that are the back of the thigh
(named after the muscles and tendons in the same location on a pig) ...

This energy is used to convert water plus atmospheric carbon dioxide into metabolizable sugars by the biochemical process of photosynthesis. Chloroplasts have a double outer membrane. Within the stroma are other membrane structures - the thylakoids.

Granum A pile or stack of thylakoid membranes in the chloroplast.
Granzymes Proteolytic enzymes secreted by activated T cells into target cells to initiate apoptosis.

See also: Membrane, Chloroplast, Plant, Trans, Protein

Biology ThrombocytesThylakoids

 
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