In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

[Q]: Question: The mole fraction of the solvent is just one minus the mole fraction of what? Answer: solute
[A]: The mole fraction of the solvent is just one minus the mole fraction of solute.

[Q]: Question: What do you call a group of organisms of the same species that live in the same area? Answer: population
[A]: You call a group of organisms of the same species that live in the same area a(n) population.

[Q]: Question: Which proteins recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms? Answer: antibodies
[A]:
Antibodies recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms.