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DesLee26
on FreezingBlue Flashcards.
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Structure
- Unicellular, multicellular
- Uninucleated, multinucleated
- Filamentous/ colonial
- All are photosynthetic
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- Its chloroplast take the shape of the cell
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- Three groups:
- - Chlorophyceae
- - Ulvophyceae
- - charophyceae
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Mobiity
- Some may or may not
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- Most contain structures like flagella
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Location
- Majority reside in fresh water;
- Free-floating or attached to a substrate; may grow on snow
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- Can have symbiotic relationships
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- North side of tress, where it is moist and cololer
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Cells
- haploid or diploid (depending on the life cycle)
- has pyrenoids
- may be uninucleate or multinucleate
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Pigments
- - Have an orangey-red spot associated with them
- - Chlorophylls a and b and carotenoid
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Cell Wall
Firm cell walls with cellulose, hemicellulose, and pectic substances
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Reproduction
- Asexual (mitosis)
- Sexual (isogamous, anisogamous, oogamous)
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- All three life cycles
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Uses
Future Uses
- Uses:
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- Direct food source
- - Ulva: waxpaper texture from shallow intertidal zones that is used for soups, salids, and radishes
- - Chlorella: unicellular; contains most vitamins except vitamin A; unpleasant odor and look;
- source of beta carotene;
- space exploration
- Dunaliella: 14% weight as beta carotene
- extract metals from waste water
- prduction of biofuels
- produce hydrogen that could be used as a fuel
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