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TEKS Biology High School - B.11.C: Microorganisms

Quiz by TEKS Biology High School

High School - Biology
Science (2010)
Texas Essential Knowledge and Skills (TEKS)

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5 questions
Show answers
  • Q1
    A student researching bacteria concluded a report with the claim in the box. Which statement correctly addresses the validity of the claim?
    Question Image
    The claim is invalid because only microorganisms such as viruses disrupt the health of organisms
    The claim is valid because many studies and experiments have shown that bacteria disrupt homeostasis
    The claim is invalid because there are many types of bacteria that help organisms maintain homeostasis.
    The claim is valid because bacteria cause disease
    30s
    B.11.C: Microorganisms
  • Q2
    Health professionals sometimes recommend nutritional supplements that contain a variety of species of bacteria to promote good digestive health. The product label for one of these supplements is shown. Why does this type of bacteria-filled supplement benefit human health instead of causing illness?
    Question Image
    Stomach acids and digestive enzymes kill the bacteria in this type of supplement, protecting the person against future infections by live organisms
    The human digestive system contains billions of beneficial bacteria that enhance digestion and nutrient absorption, synthesize vitamins, and help limit the growth of harmful bacteria
    These bacteria are able to deactivate viruses that may inhabit the human digestive system and are used to protect against further viral infections
    These species of bacteria remove all the other species of microorganisms living in the human digestive system and ensure that no microorganisms survive to contaminate the body
    30s
    B.11.C: Microorganisms
  • Q3
    Some fungi secrete substances that are toxic to bacteria that compete with them for food. Scientists have used their knowledge of this ability of fungi in order to produce which of the following substances?
    Plastic
    Antibiotics
    Yogurt
    Fertilizers
    30s
    B.11.C: Microorganisms
  • Q4
    A student sets up a compost bin outdoors. Inside the bin microorganisms convert the student’s vegetable and paper scraps into rich fertilizer. Which of the following best describes the role that these microorganisms play in natural habitats?
    The microorganisms turn solar energy into sugars
    The microorganisms help balance the numbers of producers and consumers
    The microorganisms help keep nutrients cycling through the ecosystem
    The microorganisms function as autotrophs
    30s
    B.11.C: Microorganisms
  • Q5
    Saprophytes are fungi that feed on dead and decomposing organisms. They secrete enzymes that digest components of cell walls, such as cellulose and lignin. Which statement explains why these fungi are an important part of the biogeochemical cycle?
    Saprophytes transport nutrients through the xylem and phloem in autotrophs.
    Saprophytes extract minerals from living tissue to recycle them back into the soil.
    Saprophytes return organic material to the soil for use by living organisms.
    Saprophytes perform gas exchange that assists the cellular activities of autotrophs.
    60s
    B.11.C: Microorganisms

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