Question

complete the following statements to describe the roles of bacteria in our lives.

1. bacteria are important to ecosystems because they act as decomposers to digest dead organic remains and return inorganic nutrients to (click to select).
2. bacteria are also important because they play important roles in the carbon cycle and the nitrogen cycle.
3. some bacteria are helpful in bioremediation or the breakdown of pollutants into less harmful chemicals.
4. bacteria are important in food science because they are responsible for fermentation, which is needed to produce cheese and pickled foods.
5. bacteria are also useful in producing antibiotics, which, in turn, kill other unwanted bacteria.
6. bacteria can have detrimental impacts on our health, such as when they are pathogens that can cause disease.

Explanation:

1. Decomposer bacteria break down dead organic matter and release inorganic nutrients back into the environment (like soil, water) for producers to use, so the correct term is the environment/soil/producers, but the standard completion here is the environment (or specifically, the soil/abiotic environment, as this closes the nutrient cycle).
2. Bacteria play a key role in both the carbon cycle and nitrogen cycle (e.g., nitrogen fixation, nitrification, denitrification by bacteria).
3. Bioremediation is the process where bacteria break down environmental pollutants into less toxic substances.
4. Fermentation by bacteria is essential for making foods like cheese, pickles, yogurt, and sauerkraut.
5. Many antibiotics (e.g., penicillin, streptomycin) are produced by bacteria (or fungi) to inhibit or kill competing bacteria.
6. Pathogenic bacteria are disease-causing organisms that can infect humans, animals, and plants.

Answer:

1. Bacteria are important to ecosystems because they act as decomposers to digest dead organic remains and return inorganic nutrients to the environment (or soil/producers).
2. Bacteria are also important because they play important roles in the carbon cycle and the nitrogen cycle.
3. Some bacteria are helpful in bioremediation or the breakdown of pollutants into less harmful chemicals.
4. Bacteria are important in food science because they are responsible for fermentation, which is needed to produce cheese and pickled foods.
5. Bacteria are also useful in producing antibiotics, which, in turn, kill other unwanted bacteria.
6. Bacteria can have detrimental impacts on our health, such as when they are pathogens that can cause disease.