Normal bacterial flora is beneficial to humans and animals because
A) they limit nutrients available to incoming pathogens.
B) they limit space available to incoming pathogens.
C) they can produce antibiotics and viruses that inhibit incoming pathogens.
D) may assist in the breakdown of foods.
E) All of the answers are correct.
Correct Answer:
Verified
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Q19: Methanogenic bacteria
A) produce all the methane implicated
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A) are bacteria which parasitise other bacteria.
B)
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