SAT / ACT Prep Online Guides and Tips

Are you studying commensalism in biology class and looking for a good commensalism definition? Commensalism is one of the trickier types of symbiosis to understand, but we'll break it down for you. Read this article to discover what commensalism is, the different types of commensalism, commensalism examples in nature, and the other types of symbiosis and how they differ from commensalism.

What is a vacuole and what does it do? A vacuole is a structure found in animal, plant, bacteria, protist, and fungi cells. It’s one of the largest organelles found in cells, and it’s shaped like a large sac. Vacuoles have a simple structure: they are surrounded by a thin membrane and filled with fluid and any molecules they take in. They look similar to vesicles, another organelle, because both are membrane-bound sacs, but vacuoles are significantly larger than vesicles and are formed when multiple vesicles fuse together.

Confused about transcendentalism? You’re not alone! Transcendentalism is a movement that many people developed over a long period of time, and as a result, its complexity can make it hard to understand.

That’s where we come in. Read this article to learn a simple but complete transcendentalism definition, key transcendentalist beliefs, an overview of the movement's history, key players, and examples of transcendentalist works. By the end, you’ll have all the information you need to write about or discuss the transcendentalist movement.

Do you need to write a persuasive essay but aren’t sure what topic to focus on? Were you thrilled when your teacher said you could write about whatever you wanted but are now overwhelmed by the possibilities? We’re here to help!

Read on for a list of 113 top-notch persuasive essay topics, organized into ten categories. To help get you started, we also discuss what a persuasive essay is, how to choose a great topic, and what tips to keep in mind as you write your persuasive essay.

Do you need to write an analytical essay for school? What sets this kind of essay apart from other types, and what must you include when you write your own analytical essay? In this guide, we break down the process of writing an analytical essay by explaining the key factors your essay needs to have, providing you with an outline to help you structure your essay, and analyzing a complete analytical essay example so you can see what a finished essay looks like.

Need to defend your opinion on an issue? Argumentative essays are one of the most popular types of essays you’ll write in school. They combine persuasive arguments with fact-based research, and, when done well, can be powerful tools for making someone agree with your point of view. If you’re struggling to write an argumentative essay or just want to learn more about them, seeing examples can be a big help.

After giving an overview of this type of essay, we provide three argumentative essay examples. After each essay, we explain in-depth how the essay was structured, what worked, and where the essay could be improved. We end with tips for making your own argumentative essay as strong as possible.

Do you struggle with ACT Science? You’re not alone! Science is often the ACT section students feel least comfortable with because it’s so different from the science exams you take in school. Despite this, there are very few books specifically dedicated to ACT Science. At PrepScholar, we decided to use our expert ACT knowledge to fix that.

When you’re learning a new language, politeness is key. You’re almost guaranteed to make mistakes when speaking, but a lot of the confusion and awkwardness can be smoothed over with a few simple courtesy phrases. In this guide, we explain the most common way to say thank you in German, then give nearly a dozen other ways of expressing thanks so you always have the right phrase to use for every situation. We end with other polite phrases in German that you should know.

In 1898, the US was fighting the Spanish-American War and occupying Cuba as part of its involvement in maintaining the island’s newfound independence. Once the war was over, the US still wanted to maintain influence in Cuba. In order to achieve this, the Platt Amendment was passed. Read this guide to learn what the Platt Amendment includes, why it was created, what important dates are associated with it, and how its impacts live on today, including how it led to the creation of Guantanamo Bay.

Knowing how to ask where the bathroom is located is crucial if you’re traveling somewhere new or learning a new language. Read this guide to learn about all the different ways to say “bathroom” in Spanish, including which terms you should use in different situations. You’ll also learn how to ask to use the bathroom in Spanish, as well as additional bathroom-related words and phrases.

Are you considering a job in healthcare administration? It’s a rapidly growing field that pays well and gives you the opportunity to help patients and make the medical process easier for them. However, you need to have the proper education to work in this field.

What healthcare administration degree do you need to get the job you want? Once you have your health administration degree, what jobs can you get? How much money can you make? Is a bachelor’s degree in healthcare administration enough or do you need to get a master’s? And if you decide to get your degree online, what are the best programs available? This guide will answer all your questions!

The business world is full of acronyms, and keeping them all straight can be tough. What is Return on Assets, also known as ROA? Read on to learn exactly what ROA is, how you can use the ROA formula to calculate it, how ROA relates to similar financial ratios, and, most importantly, what you can learn about the success and future of a company from its ROA.

What is the distributive property? Did you go over the distributive property definition in school but still aren’t sure what it is or why it’s important?

The distributive property is a key mathematical property you’ll need to know to solve many algebra problems. In this guide, we explain exactly what the distributive property is, why it’s important, when you should use it, what other math rules you need to know for it, and we also work through several examples so you can see the distributive property in action.

Have you noticed a large black and yellow spider making its home in your yard? This species is commonly known as the garden spider, and they are widespread throughout North America. Should you be concerned about you or your pet being bitten by a garden spider? Are garden spiders poisonous? On the contrary, garden spiders are a beneficial garden inhabit and are key to keeping insect populations down. Read this guide to learn more about this striking spider species and their unique characteristics.

The hole punch was actually invented decades before it became a staple of modern offices. Read this guide to learn more about hole punch history, why the original inventor of the hole punch was contested, and how the hole punch has evolved over the centuries.