Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
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Question: When the smooth muscle relaxes, the arterioles dilate, allowing blood to enter the capillaries.

Answer: When the smooth muscle relaxes, the arterioles dilate, allowing blood to enter the what?


Question: Slimy smear does the bacteria look when seen with the naked eye.

Answer: How does the bacteria look when seen with the naked eye?


Question: Certain anaerobic parabasalid species exist in the digestive tracts of termites and wood-eating cockroaches, where they contribute an essential step in the digestion of cellulose.

Answer:
Certain anaerobic parabasalid species exist in the digestive tracts of termites and wood-eating cockroaches, where they contribute an essential step in the digestion of this?