Answer:
They are microbiota cells
Explanation:
Microbiota cells in the human gut are composed of different types of microbial communities (e.g., Clostridium, Prevotella, Bifidobacterium, Eubacterium, Provetella, Lactobacillus Peptococcus, Eubacterium, etc.). These bacteria are smaller and lighter than human cells. Nonetheless, microbial communities play a critical role in human health and help to extract energy from foods.
