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15.5: Chapter 5 exercises

  • Page ID
  • Multiple Choice

    Which genus includes the causative agent for malaria?

    A. Euglena
    B. Paramecium
    C. Plasmodium
    D. Trypanosoma

    Which protist is a concern because of its ability to contaminate water supplies and cause diarrheal illness?

    A. Plasmodium vivax
    B. Toxoplasma gondii
    C. Giardia lamblia
    D. Trichomonas vaginalis

    Fill in the Blank

    The plasma membrane of a protist is called the __________.

    Animals belong to the same supergroup as the kingdom __________.

    Short Answer

    What are kinetoplastids?

    Aside from a risk of birth defects, what other effect might a toxoplasmosis infection have?

    What is the function of the ciliate macronucleus?

    Critical Thinking

    The protist shown has which of the following?

    A. pseudopodia
    B. flagella
    C. a shell
    D. cilia

    A micrograph of an oval cell with a large sphere in the center and many short hair-like projections on the outside.

    (credit: modification of work by Richard Robinson)

    Protist taxonomy has changed greatly in recent years as relationships have been re-examined using newer approaches. How do newer approaches differ from older approaches?

    What characteristics might make you think a protist could be pathogenic? Are certain nutritional characteristics, methods of locomotion, or morphological differences likely to be associated with the ability to cause disease?

    Multiple Choice

    Which polysaccharide found in red algal cell walls is a useful solidifying agent?

    A. chitin
    B. cellulose
    C. phycoerythrin
    D. agar

    Which is the term for the hard outer covering of some dinoflagellates?

    A. theca
    B. thallus
    C. mycelium
    D. shell

    Which protists are associated with red tides?

    A. red algae
    B. brown algae
    C. dinoflagellates
    D. green algae

    Fill in the Blank

    Structures in chloroplasts used to synthesize and store starch are called ________.

    Algae with chloroplasts with three or four membranes are a result of ________ ________.

    Short Answer

    What is a distinctive feature of diatoms?

    Why are algae not considered parasitic?

    Which groups contain the multicellular algae?

    Multiple Choice

    A fluke is classified within which of the following?

    A. Nematoda
    B. Rotifera
    C. Platyhelminthes
    D. Annelida

    A nonsegmented worm is found during a routine colonoscopy of an individual who reported having abdominal cramps, nausea, and vomiting. This worm is likely which of the following?

    A. nematode
    B. fluke
    C. trematode
    D. annelid

    A segmented worm has male and female reproductive organs in each segment. Some use hooks to attach to the intestinal wall. Which type of worm is this?

    A. fluke
    B. nematode
    C. cestode
    D. annelid

    Fill in the Blank

    Flukes are in class _________.

    A species of worm in which there are distinct male and female individuals is described as _________.

    Short Answer

    What is the best defense against tapeworm infection?

    Critical Thinking

    Given the life cycle of the Schistosoma parasite, suggest a method of prevention of the disease.

    Multiple Choice

    Mushrooms are a type of which of the following?

    A. conidia
    B. ascus
    C. polar tubule
    D. basidiocarp

    Which of the following is the most common cause of human yeast infections?

    A. Candida albicans
    B. Blastomyces dermatitidis
    C. Cryptococcus neoformans
    D. Aspergillus fumigatus

    Which of the following is an ascomycete fungus associated with bat droppings that can cause a respiratory infection if inhaled?

    A. Candida albicans
    B. Histoplasma capsulatum
    C. Rhizopus stolonifera
    D. Trichophyton rubrum

    Fill in the Blank

    Nonseptate hyphae are also called _________.

    Unicellular fungi are called _________.

    Some fungi have proven medically useful because they can be used to produce _________.

    Short Answer

    Which genera of fungi are common dermatophytes (fungi that cause skin infections)?

    What is a dikaryotic cell?

    Critical Thinking

    Which of the drawings shows septate hyphae?

    a) a long strand with walls dividing it into rectanges. B) A long square with no walls between the nuclei.

    Explain the benefit of research into the pathways involved in the synthesis of chitin in fungi.

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