Ch 3: MCAS STE Biology: Organelles

About This Chapter

This chapter helps you review for the MCAS STE Biology exam by delving into the various components of a cell and how they each function to sustain life as we know it.

MCAS STE Biology: Organelles - Chapter Summary

Let us help you review the many important parts and functions of a cell so that you can prepare for relevant questions on the MCAS STE Biology exam. After completing this chapter, you will have reviewed:

  • Structure of the nucleus
  • The nuclear envelope
  • Cytoplasm and mitochondria
  • Rough & smooth endoplasmic reticulum
  • Golgi apparatus
  • Lysosomes and ribosomes
  • Plant cell and chloroplast structure
  • Cytoskeletons and centrosomes
  • Cilia and flagella
  • Pseudopods

Each lesson contains a video along with its transcript to provide several methods for learning. Below each video you will find a clickable timeline that you can use to return to a certain portion of the lesson. The lessons have been developed by professionals to help you easily absorb and retain the information. You will also find a self-assessment quiz at the end of each lesson to help test your knowledge of the material.

MCAS STE Biology: Organelles - Objectives

The MCAS STE Biology exam is a standardized test taken by high school students in Massachusetts. The exam assesses students' mastery of the educational material covered in biology courses and focuses on five main content categories. The lessons in this chapter help you to review for questions related to biochemistry and cell biology, which account for 25% of the total score.

The MCAS STE Biology exam is one of four Science and Technology/Engineering exams available to high school students in Massachusetts. Students must pass one of these exams with a score of 220 or higher to qualify for graduation.

16 Lessons in Chapter 3: MCAS STE Biology: Organelles
Test your knowledge with a 30-question chapter practice test
Structure of the Nucleus: Nucleolus, Nuclear Membrane, and Nuclear Pores

1. Structure of the Nucleus: Nucleolus, Nuclear Membrane, and Nuclear Pores

In this lesson, we'll discuss the organization and importance of the nucleus in your cells. This is the membrane-bound structure responsible for containing all the genetic material essential to making you who you are.

Nuclear Envelope: Definition, Function & Structure

2. Nuclear Envelope: Definition, Function & Structure

The nuclei of eukaryotic cells are separated from the cytosol by the nuclear envelope. In this lesson, we explore the structure of the nuclear envelope and the functions it performs in cells.

What is Cytoplasm? - Definition & Functions

3. What is Cytoplasm? - Definition & Functions

Did you know your cells are filled with a thick fluid? Cytoplasm is an important part of your cells and serves several functions that are key to cellular health and productivity.

Mitochondria Structure: Cristae, Matrix and Inner & Outer Membrane

4. Mitochondria Structure: Cristae, Matrix and Inner & Outer Membrane

If you want to make it through the day, you're going to need some energy. In this lesson, we'll learn about the organelle that supplies this energy, the mitochondrion, and why this cell structure appreciates the time you took to eat breakfast this morning!

Rough Endoplasmic Reticulum: Definition, Structure & Functions

5. Rough Endoplasmic Reticulum: Definition, Structure & Functions

Cells contain many parts. Each of these parts have specific functions to ensure the survival of living things. In this lesson, you will learn about the part of the cell known as the rough endoplasmic reticulum.

Smooth Endoplasmic Reticulum: Definition, Functions & Structure

6. Smooth Endoplasmic Reticulum: Definition, Functions & Structure

Without them you couldn't survive, but you probably know nothing about them. We're referring to an organelle called smooth endoplasmic reticulum. This lesson will explain why this organelle is important as well as look at its structure and function.

Golgi Apparatus: Definition & Function

7. Golgi Apparatus: Definition & Function

Eukaryotic cells contain many organelles to carry out their life functions. One of these important organelles is known as the Golgi apparatus. In this lesson, we'll learn about the structure and function of this organelle.

Lysosome: Definition & Function

8. Lysosome: Definition & Function

Lysosomes are organelles found inside all cells. In this lesson, you will learn about the structure and function of lysosomes to gain a better understanding of them.

The Ribosome: Structure, Function and Location

9. The Ribosome: Structure, Function and Location

The ribosome is the cellular structure responsible for decoding your DNA. In this lesson, we'll learn about ribosome structure, function and location - characteristics that make it a very good genetic translator.

Plant Cell Structures: The Cell Wall and Central Vacuole

10. Plant Cell Structures: The Cell Wall and Central Vacuole

In this lesson, we'll talk about some of the things that make plant cells so different from our cells. In addition to being mean, green photosynthesizing machines, plant cells have cell walls and central vacuoles to make them unique!

Chloroplast Structure: Chlorophyll, Stroma, Thylakoid, and Grana

11. Chloroplast Structure: Chlorophyll, Stroma, Thylakoid, and Grana

In this lesson, we'll explore the parts of the chloroplast, such as the thylakoids and stroma, that make a chloroplast the perfect place for conducting photosynthesis in plant cells.

The Cytoskeleton: Microtubules and Microfilaments

12. The Cytoskeleton: Microtubules and Microfilaments

In this lesson, we'll learn about the cytoskeleton of your cells. This network of microtubules, intermediate filaments, and microfilaments helps different types of cells maintain a unique set of characteristics, including shape and movement.

Centrosome: Definition & Function

13. Centrosome: Definition & Function

There are many different organelles found inside of our cells, and each one carries with it specific functional responsibilities. In this lesson, we will be looking at centrosomes and the roles they play in cellular function.

Cilia in Cells: Definition, Functions & Structure

14. Cilia in Cells: Definition, Functions & Structure

Cilia have a cool name, but what are they? What do they do? Complete this lesson to find out what your cilia are up to and why you should be impressed with their hard work!

Flagella: Definition, Structure & Functions

15. Flagella: Definition, Structure & Functions

One of the more dramatic ways that single-celled organisms get around is a whip-like structure called a flagellum. Learn the ways that different organisms make use of their flagella to move around their microscopic world.

Pseudopods: Definition & Function

16. Pseudopods: Definition & Function

Extensions of your body that can change shape and help you catch food - sounds mysterious, doesn't it? In this lesson, you will learn about pseudopods, which help tiny critters called protozoa move and capture food.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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