For the 1st one I would say C as it says Cells are the smallest form of life, for the 2nd one I would say C because the others all have animal which doesn't have cell wall, 3rd is A
they are caused by mutation. the best example of it are human blood groups.
Answer: A
Explanation: Its three leafs and tear drop shaped.
Mannan-oligosaccharides (MOS) are prebiotics composed of complex carbohydrate molecules, derived from the outer cell wall of S. cerevisiae, whose main components, β-glucans (mannoproteins), are known as elements capable of activating the immune system of animals [3, 5]. :D