Biology Chapter: Protists and Fungi
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Questions and Answers

What distinguishes protozoans from fungus-like and plant-like protists?

  • Their size
  • Their color
  • Their heterotrophic feeding (correct)
  • Their reproduction methods

    • What allows amoebas to change their shape and move?

  • Their high metabolic rate
  • The flexibility of their plasma membrane (correct)
  • The presence of flagella
  • Their rigid cell wall

    • What are pseudopods used for in amoebas?

  • Reproduction
  • Food storage
  • Photosynthesis
  • Locomotion (correct)

    • When at rest, what shape do amoebas generally maintain?

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

    What is indicated by recent research about amoebas?

    <p>They are capable of exhibiting intelligence</p> Signup and view all the answers

    What defines protists as a separate kingdom?

    <p>They lack some characteristics of the other kingdoms.</p> Signup and view all the answers

    Which statement about fungi is accurate?

    <p>Fungi are primarily classified based on their reproductive structures.</p> Signup and view all the answers

    How do fungi acquire nutrients?

    <p>By absorbing food through their cell walls.</p> Signup and view all the answers

    What is true about the classification of protists?

    <p>Protists are a diverse group that includes both unicellular and multicellular forms.</p> Signup and view all the answers

    In what way can fungi be harmful?

    <p>They can cause diseases in plants and animals.</p> Signup and view all the answers

    What is the primary function of the cilia in ciliates?

    <p>Movement and feeding</p> Signup and view all the answers

    What occurs during the conjugation of ciliates like paramecia?

    <p>DNA exchange and genetic material reorganization</p> Signup and view all the answers

    Which of the following is true about Balantidium coli?

    <p>It can cause dysentery in humans.</p> Signup and view all the answers

    What role do contractile vacuoles serve in ciliates?

    <p>They regulate water pressure.</p> Signup and view all the answers

    How does the Stentor ciliate feed?

    <p>Using cilia to create a microcurrent that draws in food.</p> Signup and view all the answers

    What kingdom do diatoms belong to?

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

    Which of the following statements best describes protists?

    <p>They can be unicellular or multicellular eukaryotes.</p> Signup and view all the answers

    What is a key difference between protists and fungi?

    <p>Protists are mostly unicellular, while fungi are mostly multicellular.</p> Signup and view all the answers

    What question should one continuously ask when studying diverse life forms?

    <p>What is intelligence?</p> Signup and view all the answers

    Which of the following is not a characteristic used to define protists?

    <p>They exist only in freshwater environments.</p> Signup and view all the answers

    How do amoebas primarily move in their environment?

    <p>By adhering to surfaces with a slimy coating</p> Signup and view all the answers

    What is the primary purpose of contractile vacuoles in amoebas?

    <p>To regulate water balance inside the cell</p> Signup and view all the answers

    Which of the following amoebas is known to cause disease in humans?

    <p>Naegleria fowleri</p> Signup and view all the answers

    What is the primary method by which amoebas reproduce?

    <p>Asexual reproduction</p> Signup and view all the answers

    What environmental conditions can amoebas endure by forming cysts?

    <p>Harsh conditions like dryness and lack of food</p> Signup and view all the answers

    Which protozoan is responsible for causing African sleeping sickness?

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

    How do protozoans generally absorb their food?

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

    What is the primary role of Trichonympha in relation to termites?

    <p>Fosters cellulose digestion</p> Signup and view all the answers

    What distinguishes a ciliate from other protozoans?

    <p>They use cilia for movement</p> Signup and view all the answers

    What is a prominent feature of Paramecium?

    <p>Macronucleus controlling metabolism</p> Signup and view all the answers

    What type of cell structure do protists possess?

    <p>Eukaryotic cell structure</p> Signup and view all the answers

    What organelles are commonly found in protists?

    <p>Mitochondria and chloroplasts</p> Signup and view all the answers

    Which of the following is NOT a feature of protists?

    <p>Absence of organelles</p> Signup and view all the answers

    Which statement is true regarding the cellular structure of protists?

    <p>All protists have a nucleus enclosed in a nuclear membrane</p> Signup and view all the answers

    Which of the following statements is false about protists?

    <p>They possess prokaryotic cells</p> Signup and view all the answers

    What is a key reason that unicellular protists are considered more complex than individual cells of multicellular organisms?

    <p>Unicellular protists perform all functions of life themselves.</p> Signup and view all the answers

    Which of the following is NOT a category used to classify protists based on their method of obtaining nutrition?

    <p>Bacteria-like protists</p> Signup and view all the answers

    What characteristic distinguishes fungus-like protists from plant-like protists?

    <p>Fungus-like protists are heterotrophic decomposers.</p> Signup and view all the answers

    How have biologists traditionally categorized protists?

    <p>By their method of obtaining nutrition.</p> Signup and view all the answers

    What is the main disagreement among biologists regarding the kingdom Protista?

    <p>The number of kingdoms or supergroups into which they should be divided.</p> Signup and view all the answers

    What is the primary characteristic of sporozoans?

    <p>They form spores at some point in their life cycle.</p> Signup and view all the answers

    How do sporozoans typically reproduce?

    <p>By a unique asexual reproduction process that forms spores.</p> Signup and view all the answers

    What happens to Plasmodium once it enters the human bloodstream after a mosquito bite?

    <p>It travels to the liver and eventually invades red blood cells.</p> Signup and view all the answers

    What is the life cycle of Plasmodium associated with?

    <p>A complex cycle involving mosquitoes and humans.</p> Signup and view all the answers

    What is the nature of spores formed by sporozoans?

    <p>They have a hard, protective coating allowing them to survive unfavorable conditions.</p> Signup and view all the answers

    Which of the following best describes malaria?

    <p>A parasitic infection caused by the <em>Plasmodium</em> genus.</p> Signup and view all the answers

    What role do mosquitoes play in the life cycle of Plasmodium?

    <p>They are vectors that transmit the spores to humans.</p> Signup and view all the answers

    Which statement best summarizes the significance of sporozoans in medical science?

    <p>They are significant due to their role in causing diseases like malaria.</p> Signup and view all the answers

    What primary function does the saliva from a mosquito serve when it bites a human?

    <p>To prevent blood clotting</p> Signup and view all the answers

    What is a consequence of Plasmodium infecting red blood cells?

    <p>The infected cells burst, spreading the infection</p> Signup and view all the answers

    What environmental condition is necessary for Plasmodium to reproduce inside a mosquito?

    <p>The formation of spores</p> Signup and view all the answers

    Which of the following statements about Toxoplasma gondii is correct?

    <p>It can transform into spores outside its host</p> Signup and view all the answers

    What can be a significant health risk associated with Toxoplasma gondii for pregnant women?

    <p>Development of severe birth defects</p> Signup and view all the answers

    What role do organizations like Doctors Without Borders play in disease management?

    <p>They provide immediate aid and support to affected populations</p> Signup and view all the answers

    What is one way to significantly reduce the spread of malaria?

    <p>Reducing the population of mosquitoes</p> Signup and view all the answers

    What does the cycle of reproduction involving spores and asexual reproduction in Plasmodium indicate?

    <p>It's a process called alternation of generations</p> Signup and view all the answers

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