Algae cell wall, SEM

Algae cell wall, SEM

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Caption: Algae cell wall. Coloured scanning electron micrograph (SEM) of cellulose microfibrils (strands) in a Chaetomorpha sp. algal cell wall. Unlike animal cells, plants cells are enclosed in a protective rigid cell wall. The main constituent of the wall is cellulose, a complex polysaccharide that forms microfibrils. Two other polysaccharides, pectin and glycan, cross-link with the cellulose to increase the strength of the cell wall. Cellulose microfibrils measure between 5 nanometres and 15 nanometres in diameter.

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Keywords: alga, algae, biological, biology, botanical, botanical science, botany, brown, cell wall, cells, cellulose, chaetomorpha sp, coloured, complex carbohydrate, cross-linking, false-coloured, glycans, green alga, green algae, many, microfibril, microfibrils, multiple, nature, pectins, plant, plant cell wall, plant structure, polysaccharide, rigid, scanning electron micrograph, scanning electron microscope, sem

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