All living things are made of cells and all cells have different parts that perform specific functions. One of the parts present in every cell is called the cell membrane.

In this article, we’ll discuss the cell membrane structure and function, answering the questions “what does the cell membrane do?” and “why is the cell membrane important?”

If you’re planning to take the SAT, you may have heard of this strange question type known as grid-ins. You probably know that there are multiple-choice questions and an optional essay, but what are grid-ins? Problems that require you to draw pictures or graphs, perhaps? The reality is grid-ins are almost identical to multiple-choice questions; they just don’t provide answer choices.

This guide will explain what grid-ins are, discuss where they appear, outline how many appear on the SAT, and provide tips on answering them. 

In 2018, Scientific American published an article titled “The Number of Americans with No Religious Affiliation Is Rising,” which looked at the rising number of Americans who don’t identify with any religion. In 2018, a survey done by the Pew Research Center found 34 to 36 percent of millennials identify as atheist, agnostic, or just “nothing in particular.”

While most people have a general understanding of atheism, agnosticism can be a little more confusing since it falls in the grey area between total belief and total disbelief in the existence of a higher power and/or God.

In this article, we’ll explore what it means to be agnostic. First, we’ll define the term agnostic and talk about what agnosticism looks like in practice, then we’ll dive into the differences between being agnostic vs. atheist. Finally, we’ll share a list of famous people who are agnostics.

So let’s get started!

The ACT Science section is one of the bigger mysteries to students since it is the most different from the SAT, PSAT, and other tests you have taken. Here, I will try to unravel the mystery by explaining the types of passages on the ACT, as well as the unique question types for each of these passages.

By the end of this article, you will have a clear understanding of what the ACT Science section entails and how to best prepare for it.

In March 2016, the SAT underwent a complete redesign, concentrating more on testing reasoning skills than on obscure vocabulary knowledge.

So how do you study for the SAT now that there just aren't that many practice tests available? After all, there’s nothing quite like taking actual official SAT tests to get you ready for the real thing. The good news is that many of the questions that appeared on the old SAT format are still completely relevant and a great resource for practicing your skills!

Trigonometry is the branch of math that deals with right triangles and the relationships between their sides and angles. (The word "trig" is related to the word "triangle," to help you remember.)

There will generally be around 4-6 questions questions on the ACT that deal with trigonometry (the official ACT guidelines say that trigonometry problems make up 7% of the test). They may seem complicated at first glance, but most of them boil down to a few simple concepts.

This article will be your comprehensive guide to the trigonometry you’ll need to know for the ACT. We’ll take you through the meaning of trigonometry, the formulas and understandings you’ll need to know, and how to tackle some of the most difficult ACT trig problems.

One of the best ways to prepare for the AP Literature exam is to learn about different literary devices and how you can use them to analyze everything from poetry to novels. Not only will this help you on the multiple choice section of the test, it’s critical for earning perfect scores on your essays, too!

Today, we’re going to take a closer look at one specific device: point of view. First, we’ll give you the point of view definition, then we’ll explain how the work’s narrator affects its point of view. Then we’ll explain the four types of point of view and provide examples and analysis for each one.

By the end of this article, you’ll be a point of view expert! So let’s get started.

A literary device is a technique a writer uses to convey ideas and messages to their readers. That means that as readers, we need to understand and use literary devices to fully understand a work’s major themes!

Today, we’re going to take a closer look at how to use imagery to analyze a text. We’ll start by giving you the imagery definition before talking about why it’s an important tool for analyzing a text. Then we’ll walk you through some imagery examples in poetry and fiction and show you exactly how to analyze the imagery in each.

By the end of this article, you’ll be able to talk about imagery in literature like a pro, so let’s get started.

Analyzing literature can be pretty confusing, especially if you’re reading something that’s pretty complicated. That’s why it’s important to understand literary devices, which are tools designed to help you unlock the meaning of a text.

Think of literary devices like tools in a toolbox. Each device has a different use, so it’s important that you have a bunch of different options to choose from...especially when you’re crunched for time, like during an AP Literature exam.

That’s why we’re going to teach you everything you need to know about assonance, which is a literary device that helps a writer create both rhythm and tone. To do this, we’ll:

• Define assonance and talk about why it’s helpful in analyzing literature,
• Walk you through assonance examples in poetry and prose, and
• Give you four expert tips to help you find an analyze assonance in any text.

Ready? Let’s dive in!

You’ve no doubt seen pictures of camel spiders before, usually accompanied by a story about deadly bites, camel eating, or chasing people across the desert. Thanks to chain letters, camel spiders have a reputation as being fearsome, terrifying predators—but is that warranted?

In this article, we’ll be covering the facts and fictions of camel spiders, including where they’re found and what they eat, as well as some biological information about how camel spiders fit into their environment. Read on to learn more about camel spiders!

The term iambic pentameter sounds like it’s more at home in a science textbook than it is in your English class. But believe it or not, iambic pentameter is a type of poetic meter!

In other words, iambic pentameter is a term that refers to a very specific type of rhythm that you find in poetry.

Knowing what poetic meter is and how to find it is an important skill for the AP Literature exam, and it can be really impressive if you discuss it properly in the AP exam’s essay portion. We know poetic meter might sound scary—heck, anything that has to do with poetry can be scary!—but we’re here to help. In this article, you’ll learn what iambic pentameter is, discover how to find it in a poem, and analyze iambic pentameter examples in poetry.

Let’s dive right in!

The word photosynthesis comes from two Greek words: photo, meaning “light”, and synthesis, meaning “put together.” Looking at that those two roots, we have a good idea of what happens during the chemical process of photosynthesis: plants put together water and carbon dioxide with light to create glucose and oxygen.

In this article, we’ll break down what photosynthesis is, why photosynthesis is important, and discuss the chemical equation for photosynthesis: what it is and what each part of it means.

Acids get a bad rap—when we hear the word, we often picture some kind of vat of flesh-eating, lime-green liquid. But acids of all kinds, including muriatic acid, have tons of practical uses, and not just for super villains! Homeowners, leatherworkers, and even the pearl industry use muriatic acid on a daily basis.

This guide will cover what muriatic acid is, some common uses for it, and how to handle it safely.

Having your GED can open many doors for you, including getting a better job or being able to attend college, so you want to give yourself the best shot at getting a passing score. For most people, this means they’ll need to spend some serious time studying for the GED, and one of the best ways to prepare is to take GED practice tests.

This guide contains all the best practice GED tests available, including official, free, and paid practice tests. We explain where to find them, how much they cost, what each test’s pros and cons are, and we also give general advice on what to look for in a GED practice test.

Ever wondered how many seconds there are in a day? How about a week? A year? Thanks to Rent, we might know the number of minutes in a year (525,600), but how many seconds is that?

Whether you’re trying to get even more granular about how you measure a year or you’re just trying to figure out how many seconds are left until summer vacation, this guide will teach you how many seconds are in a day, a week, a year, and beyond. Not only will we teach you how to calculate these problems, but we’ll also give you a handy chart to keep track of them.

Read on to find out how to swap one unit of time for another!