Summarize the role of microorganisms in both maintaining and disrupting the health of both organisms and ecosystems.
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Q 1/5
Score 0
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?
60
The microorganisms function as autotrophs
The microorganisms help balance the numbers of producers and consumers
The microorganisms turn solar energy into sugars
The microorganisms help keep nutrients cycling through the ecosystem
Q 2/5
Score 0
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?
60
Plastic
Yogurt
Antibiotics
Fertilizers
5 questions
Q.
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?
1
60 sec
BIOL.11a
Q.
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?
2
60 sec
BIOL.11a
Q.
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?
3
60 sec
BIOL.11a
Q.
A student researching bacteria concluded a report with the claim in the box. Which statement correctly addresses the validity of the claim?
4
60 sec
BIOL.11a
Q.
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?
