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: What do you call the hard case that surrounds the soft parts of some animals? Answer: exoskeleton

A: You call the hard case that surrounds the soft parts of some animals the exoskeleton.
****
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.
****
Q: Question: Which molecules are made of one carbon and four hydrogen atoms? Answer: hydrocarbons

A:
Hydrocarbons are made of one carbon and four hydrogen atoms.
****