Tracy Jennings, Works at Noodle and here to help!
Yes, you should be wary of copying anything from the Internet, even it's "just" a paragraph. Many of your classmates might have lifted copy without getting caught, but you should take the easy way out. If you're thinking enough about it to post this question, then I bet your gut is telling you it's not worth it. There are so many free tools available (e.g. http://plagiarisma.net/) that makes it easy for grad students, teachers, interviewers, whomever, to run through your essay and see if you've plagiarized. It's not worth taking the chance.
You might find these articles helpful for more context:
- Academic Expectations in College
- Tips to Avoid Plagiarism
- Avoiding Plagiarism in Quotations and Paraphrasing [Video]
Also, you're in college to learn, right? It's simple to put together a straightforward essay - I find the hardest part is getting started! - check out this this article about 7 tips to write a better essay. You don't have to write a earth-shatteringly ground-breaking novel to succeed. The typical reason why you are assigned essays is to practice putting your thoughts on the page in an organized way. Think of that as the task at hand in that way, and I hope it helps! Good luck, and have fun with it.