Microorganisms in Laboratory and Marine Environments Quiz
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Questions and Answers

Which group of protists contains over 6,000 species with food storage in the form of oils and leucosin, and the presence of chlorophylls a and c and fucoxanthin?

  • Euglenoids
  • Chlorophycophyta
  • Chrysophycophyta (correct)
  • Dinoflagellates
  • Which subgroup of Chrysophycophyta has hard cell walls of pectin, cellulose, or silicon oxide that accumulate on the ocean bottom to form diatomite?

  • Euglenoids
  • Diatoms (correct)
  • Dinoflagellates
  • Desmids
  • Which group of algae synthesizes starch for food storage and comprises diverse forms such as Chlamydomonas, Pandorina, and Volvox?

  • Chlorophycophyta (correct)
  • Chrysophycophyta
  • Phaeophycophyta
  • Dinoflagellates
  • Which group of algae exists primarily in saltwater, has the same pigments as chrysophycophytes, and stores food as laminarin and mannitol?

    <p>Desmids</p> Signup and view all the answers

    Which characteristic is unique to desmids among green algae?

    <p>Consist of two similar halves or semicells, usually separated by an isthmus</p> Signup and view all the answers

    Which group of protists includes marine species with cellulose walls, bioluminescent properties, and two flagella?

    <p>Dinoflagellates</p> Signup and view all the answers

    To which group does the majority of algae observed in ponds belong?

    <p>Chlorophycophyta</p> Signup and view all the answers

    What is the most likely classification for unpigmented, moving microorganisms found in the pond water?

    <p>Protozoa</p> Signup and view all the answers

    What is the probable classification for greenish or golden-brown organisms found in the pond water?

    <p>Algae</p> Signup and view all the answers

    Which group of microorganisms is likely to appear blue-green in the pond water?

    <p>Cyanobacteria</p> Signup and view all the answers

    Where should one refer for assistance in identifying organisms not described in the short text of the exercise?

    <p>Supplementary books on the laboratory bookshelf</p> Signup and view all the answers

    What is the prime concern in the exercise related to the study of pond water microorganisms?

    <p>Protozoans, algae, and cyanobacteria</p> Signup and view all the answers

    What determines the extent to which students will be held accountable for the names of various organisms encountered in the exercise?

    <p>The instructor</p> Signup and view all the answers

    What is the purpose of the exercise related to the study of pond water microorganisms?

    <p>To become familiar with the differences between protozoans, algae, and cyanobacteria</p> Signup and view all the answers

    Which of the following pigments are unique to cyanobacteria and red algae?

    <p>C-phycocyanin and c-phycoerythrin</p> Signup and view all the answers

    Where are the pigments of cyanobacteria located?

    <p>In phycobilisomes attached to thylakoids</p> Signup and view all the answers

    What is the cellular structure of cyanobacteria like?

    <p>Lacks visible nuclei but has nuclear material in the form of DNA granules</p> Signup and view all the answers

    Which division in Domain Bacteria includes a large number of microorganisms that were at one time referred to as the blue-green algae?

    <p>Division Cyanobacteria</p> Signup and view all the answers

    What type of bacteria utilize bacteriochlorophyll instead of chlorophyll a for photosynthesis?

    <p>Green nonsulfur bacteria</p> Signup and view all the answers

    What is the main factor that differentiates cyanobacteria from green sulfur and green nonsulfur photosynthetic bacteria?

    <p>Pigment composition</p> Signup and view all the answers

    In which Domain are the prokaryotes classified according to the three-domain system of classification?

    <p>Domain Bacteria</p> Signup and view all the answers

    What is the function of phycobilisomes in cyanobacteria?

    <p>Photosynthesis</p> Signup and view all the answers

    Where are the pigments of cyanobacteria located?

    <p>In phycobilisomes attached to thylakoids</p> Signup and view all the answers

    Which pigments are found in cyanobacteria?

    <p>Chlorophyll a, carotene, xanthophylls, c-phycocyanin, and c-phycoerythrin</p> Signup and view all the answers

    What is the classification of prokaryotes in the three-domain system?

    <p>Domain Bacteria</p> Signup and view all the answers

    What distinguishes prokaryotes from protists?

    <p>Size and lack of distinct nuclei with nuclear membranes</p> Signup and view all the answers

    Where are cyanobacteria pigments located?

    <p>In granules (phycobilisomes) attached to thylakoid membranes in the cytoplasm</p> Signup and view all the answers

    What pigments do Gymnodinium algae have?

    <p>Chlorophylls a and c, and various xanthophylls</p> Signup and view all the answers

    What is the primary pigment for photosynthesis in cyanobacteria?

    <p>Chlorophyll a</p> Signup and view all the answers

    What causes red tides in marine environments?

    <p>Some species of marine Gymnodinium</p> Signup and view all the answers

    What is the primary function of phycobilisomes in cyanobacteria?

    <p>To capture light energy for photosynthesis</p> Signup and view all the answers

    Where is the nuclear material located in cyanobacteria?

    <p>In the form of DNA granules in the center of the cell</p> Signup and view all the answers

    What is the procedure for making wet mount slides to study microorganisms in pond water?

    <p>Placing a drop of suspended organisms on a microscope slide, covering it with a cover glass, and recording the bottle number if using different cultures</p> Signup and view all the answers

    What distinguishes Subkingdom Protozoa from Subkingdom Algae?

    <p>Protozoa lack cell walls and have distinct nuclei with nuclear membranes</p> Signup and view all the answers

    Which phylum within Subkingdom Protozoa includes protozoans with cilia for movement and food-getting?

    <p>Ciliophora</p> Signup and view all the answers

    What distinguishes Phylum Apicomplexa within Subkingdom Protozoa?

    <p>They are internal parasites lacking locomotor organelles and having spore-forming stages</p> Signup and view all the answers

    What is the main characteristic that distinguishes Subkingdom Algae from plants?

    <p>Algae lack tissue differentiation</p> Signup and view all the answers

    What is a characteristic feature of Phylum Sarcomastigophora within Subkingdom Protozoa?

    <p>Includes Sarcodina (Amoebae) and Mastigophora (Zooflagellates)</p> Signup and view all the answers

    What distinguishes Subkingdom Protozoa from Subkingdom Algae in terms of cell structure?

    <p>Protozoa cells are covered with a cell membrane and lack cell walls</p> Signup and view all the answers

    What type of organisms are likely to be unpigmented and moving?

    <p>Protozoans</p> Signup and view all the answers

    What color are organisms that are usually algae?

    <p>Greenish or golden-brown</p> Signup and view all the answers

    What color are organisms that are cyanobacteria?

    <p>Blue-green</p> Signup and view all the answers

    What is the prime concern in the exercise described in the text?

    <p>Protozoans, algae, and cyanobacteria</p> Signup and view all the answers

    What is the purpose of the exercise described in the text?

    <p>To provide an opportunity to become familiar with the differences between protozoans, algae, and cyanobacteria</p> Signup and view all the answers

    What will be available for assistance in identifying organisms not described in the short text of the exercise?

    <p>Supplementary books on the laboratory bookshelf</p> Signup and view all the answers

    What will determine the extent to which students will be held accountable for the names of various organisms encountered?

    <p>The instructor</p> Signup and view all the answers

    Which subkingdom includes animal-like protists in Protozoa and plant-like protists in Algae?

    <p>Subkingdom Protozoa</p> Signup and view all the answers

    What covers the cells of Protozoa?

    <p>Cell membrane</p> Signup and view all the answers

    Which phylum includes structurally complex protozoans with cilia for movement and food-getting?

    <p>Phylum Ciliophora</p> Signup and view all the answers

    What do Protozoa produce that are resistant dormant stages?

    <p>Cysts</p> Signup and view all the answers

    Which phylum includes Sarcodina (Amoebae) and Mastigophora (Zooflagellates)?

    <p>Phylum Sarcomastigophora</p> Signup and view all the answers

    What does Subkingdom Algae lack, differing from plants?

    <p>Tissue differentiation</p> Signup and view all the answers

    What is the main characteristic of Phylum Apicomplexa?

    <p>Internal parasites lacking locomotor organelles and having spore-forming stages</p> Signup and view all the answers

    Study Notes

    Studying Microorganisms in Pond Water: Making Wet Mount Slides and Identifying Protists and Algae

    • Wet mount slides are necessary to study microorganisms in pond water
    • Procedure for making wet mount slides is simple: place a drop of suspended organisms on a microscope slide, cover it with a cover glass, and record the bottle number if using different cultures
    • Guidelines include using clean materials, using pipettes to get maximum organisms, and exploring slides with low-power objective first
    • Protists are single-celled eukaryons lacking tissue specialization and are grouped in Kingdom Protista
    • Subkingdom Protozoa includes animal-like protists in Protozoa and plant-like in Algae
    • Protozoa cells are covered with a cell membrane, lack cell walls, and have distinct nuclei with nuclear membranes
    • Protozoa produce resistant dormant stages called cysts and reproduce asexually and sexually
    • Subkingdom Protozoa is divided into three phyla: Sarcomastigophora, Ciliophora, and Apicomplexa
    • Phylum Sarcomastigophora includes Sarcodina (Amoebae) and Mastigophora (Zooflagellates)
    • Phylum Ciliophora includes structurally complex protozoans with cilia for movement and food-getting
    • Phylum Apicomplexa includes internal parasites lacking locomotor organelles and having spore-forming stages
    • Subkingdom Algae includes all photosynthetic eukaryotic organisms in Kingdom Protista, differing from plants in lacking tissue differentiation

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    Description

    Test your knowledge about microorganisms found in laboratory settings and marine environments with this quiz. Explore topics such as euglenoids, green algae, brown algae, diatoms, dinoflagellates, prokaryotes, cyanobacteria, and their unique characteristics and properties.

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