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The “Chlamydomonas Model” (Blister Series) by IBEX SCIENCES is a three-dimensional, vacuum-formed plastic relief model engineered for botany, microbiology, and general biology studies. [1]
This lightweight “blister” format features a highly magnified cross-sectional view of Chlamydomonas, a genus of single-celled green algae. The color-coded raised profile serves as an excellent visual and tactile aid to help students understand the cellular anatomy, locomotion, and photosynthetic machinery of a primitive, flagellated plant cell. [1]
The model provides distinct, raised detailing of the following key anatomical structures:
1. External Framework & Locomotion
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- Cell Wall: A thin, rigid outer boundary composed of glycoproteins (rather than cellulose), which protects the cell and maintains its characteristic oval or pear shape.
- Flagella: Two identical, whip-like projections emerging from the anterior end of the cell, responsible for pulling the organism through freshwater environments with a breaststroke-like motion. [1]
- Contractile Vacuoles: Two small vacuoles located near the base of the flagella that rhythmically expand and contract to pump out excess water, maintaining osmotic balance.
2. Photosynthetic Apparatus
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- Cup-Shaped Chloroplast: A massive, prominent green structure that occupies most of the cell’s lower interior. This unique shape maximizing light absorption for photosynthesis. [1, 2]
- Pyrenoid: A distinct, round protein body embedded within the chloroplast. It acts as the center for carbon fixation and is surrounded by starch grains for energy storage. [1, 2]
- Eyespot (Stigma): A small, bright orange-red pigmented spot located near the anterior edge. It contains photoreceptors that detect light direction, enabling the cell to swim toward optimal light levels for photosynthesis (phototaxis).
3. Cellular Control and Energy
- Nucleus: A single, clearly defined nucleus nested within the cup cavity of the chloroplast, housing the genetic material and directing metabolic activity. [1]
- Cytoplasm & Mitochondria: The fluid matrix filling the cell, featuring scattered mitochondria responsible for generating ATP during cellular respiration.
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