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Questions and Answers
What is the primary method of reproduction for Chlorella?
Which of the following algae is noted for its potential use as a biodiesel source?
What defines the shape of Pediastrum?
Where is Scenedesmus commonly found?
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What is a unique feature of young cells of Pediastrum?
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What condition arises from an overgrowth of Candida?
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What is a characteristic feature of Rhizopus colonies during growth?
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Which of the following symptoms is NOT associated with Candidiasis?
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Which of the following best describes invasive candidiasis?
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What are the uses of Rhizopus in industrial processes?
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Study Notes
Candida
- Occurs naturally in the mouth, skin, and intestines.
- Overgrowth of Candida yeast leads to infection (Candidiasis).
- Thrush - an overgrowth of Candida yeast in the mouth and throat, appearing as white raised bumps.
- Invasive Candidiasis - severe infection affecting the entire body, including the blood, bones, brain, and nerves.
- Symptoms: skin redness, itching, lumpy white patches, pain, burning sensation.
Rhizopus
- Colonies grow rapidly on agar surfaces.
- Initially white, colonies turn gray or yellowish-brown.
- Sporulation characterized by stolons and pigmented rhizoids.
- Widely used in industrial processes for:
- Lactic acid production
- Cortisol production
- Alcoholic fermentation
- Biosorption of heavy metals
Chlorella
- Simple eukaryotic algae with spherical cells.
- Reproduces via mitosis, doubling in number.
- Found in fresh and salt water, both singly and in clusters.
- Used in photosynthesis research due to its rapid multiplication.
Scenedesmus
- Found in freshwater rivers and lakes, ranging from tropical to arctic climates.
- Grows densely in nutrient-rich water.
- An essential primary producer and food source for higher trophic levels.
- Used in pollution and photosynthesis studies, and has potential as a biodiesel source.
Pediastrum
- Colonial green algae with a disk shape.
- The number of cells per colony varies depending on the species, ranging from 2 to 128.
- Young cells lack a nucleus, while mature cells contain up to eight nuclei.
Cladophora
- Branched filamentous green algae.
- Each filament has a reticulate chloroplast and multiple nuclei.
- Asexual reproduction involves motile spores with four flagella.
- Sexual reproduction uses biflagellate gametes.
Oscillatoria
- Filamentous Cyanobacterium (blue-green algae).
- Found in freshwater environments.
- Reproduces by fragmentation.
Spirogyra
- Filamentous green algae.
- Named for its spiral arrangement of chloroplasts.
- Found in freshwater environments.
- More than 400 species of Spirogyra exist worldwide.
Protozoa
- Single-celled eukaryotes.
- Live in both free-living and parasitic environments.
- Feed on organic matter, including other microorganisms.
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Description
Test your knowledge on Candida, Rhizopus, and Chlorella. This quiz covers their characteristics, industrial uses, and the infections they can cause. Explore the fascinating world of these organisms and their importance in nature and industry.
