About This Chapter
CBASE Science: Basics of Life - Chapter Summary
You can use this Basics of Life chapter to watch brief and entertaining video lessons about genetics and the structure of a cell. You can also take quizzes that assess your knowledge of cellular respiration. The combination of the study resources in this chapter will help you answer questions about the following:
- Definition of life sciences
- Ways life science theories originate
- Foundational elements
- Characteristics of living organisms
- Nitrogen cycle
- Free energy and matter
- Growth requirements
- Structure of the cell
- Cell wall of plant cell structures
- Difference between sexual reproduction and asexual reproduction
- Cellular respiration
- Definition of photosynthesis
- The environment, ecosystems, and food chains
If you have any questions, our subject-matter experts are happy to help you. Use the timeline to move from topic to topic in the videos. Print out the worksheet along with the answers if you need to study away from the computer.
CBASE Science: Basics of Life Science Objectives
The Fundamental Concepts category of the CBASE Science section corresponds to the lessons in this chapter. This is equal to one of the two science categories. The exam may contain questions that draw on your understanding of life processes, including photosynthesis and the function of cells. There are a total of 180 multiple-choice questions on the CBASE exam.
1. What Are Life Sciences?
The life sciences study all types of living things. Branches of the life science study things from the tiniest microorganisms to the largest animals. Learn about the many branches of the life sciences and what it's like to work in these fields.
2. Life Science Theories
In the life sciences there are many theories that explain how life works. However, before these theories became widely accepted, they had to be put to the test. In this lesson, you will learn how ideas become theories.
3. The Foundational Elements of Life
Living things are complex products of their environments. They are made of a number of different natural elements, many of which are essential to survival. Because of this, they are considered foundational elements and they support life on Earth as we know it.
4. The Defining Characteristics of Living Organisms
A house is not a living thing, but the people, animals, and plants living inside it are. So how do we define 'life'? Learn about seven characteristics that all living organisms have in common, no matter how different they may look on the outside.
5. Cycles of Matter: The Nitrogen Cycle and the Carbon Cycle
Matter is constantly cycled between living and nonliving parts of the environment. Processes like photosynthesis and nitrogen fixation allow the carbon and nitrogen cycles to regenerate needed substances by recycling Earth's atoms.
6. Living Systems Requirement for Free Energy and Matter
Free energy and matter are required by all living things in order to grow, reproduce, and maintain biological processes. Additionally, free energy and matter must also be recycled through the environment in order to remove dead material and allow for new growth.
7. The Environmental Requirements for Growth, Reproduction & Dynamic Homeostasis
Cells need to maintain internal environments that are different from their external environments in order to grow and reproduce. In this video lesson, you will understand some ways that cells can control their internal conditions to ensure proper biological functioning.
8. The Cell: Structure & Function
The cell is a small, but complex structure. Take a look inside the outer plasma membrane of a cell and discover the functions of some common cellular components, including the nucleus, endoplasmic reticulum, Golgi apparatus and mitochondria, in this lesson.
9. 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!
10. Genetics: Heredity, Traits & Chromosomes
We view manipulation of genes in our crops and livestock as a recent development. Yet, man has been manipulating the genetic makeup of his food for thousands of years through cultivation and breeding. This lesson will begin to help you understand how genetics works.
11. Asexual vs. Sexual Reproduction: Comparison & Characteristics
Did you know that some organisms can reproduce without a mate? Check out this video lesson on asexual versus sexual reproduction to discover the different ways organisms can reproduce and the main differences between mitosis and meiosis.
12. Cellular Respiration: Energy Transfer in Cells
Watch this short video to learn the basics about converting organic compounds into ATP, also known as cellular respiration. We'll look at an overview of the process.
13. Photosynthesis: Definition & Reactions
Some people may falsely assume plants to be weaker than animals. However, plants and a few other organisms harness light energy from the sun to feed the rest of us. This lesson will introduce you to how they do it.
14. The Environment, Levels of Ecology and Ecosystems
Do you know the difference between an environment and an ecosystem? In this lesson, you'll find out what makes an environment, and what makes an ecosystem. You'll also learn what ecology is and some of the ways that scientists study ecology using organisms, populations, communities, ecosystems and even the entire biosphere.
15. Food Chains, Trophic Levels and Energy Flow in an Ecosystem
In this lesson, you'll learn about food chains, food webs, and the different roles that organisms play in an ecosystem. You'll also learn about how energy flows through an ecosystem.
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Other chapters within the CBASE: Practice & Study Guide course
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- CBASE English: Literary Periods & Movements
- CBASE English: Important Authors in Literature
- CBASE English: Writing Processes
- CBASE English: Writing Grammar & Mechanics
- CBASE English: Essay Writing
- CBASE Math: Basic Concepts & Vocabulary
- CBASE Math: Solving Word Problems
- CBASE Math: Statistics & Probability
- CBASE Math: Basic Algebra
- CBASE Math: Basic Geometry
- CBASE Science: Scientific Research Methods
- CBASE Science: Scientific Methods
- CBASE Science: Basics of Physical Science
- CBASE Science: Basics of Earth Science
- CBASE Science: Basics of Astronomy
- CBASE Social Studies: Ancient History
- CBASE Social Studies: World History
- CBASE Social Studies: Major Historical Movements
- CBASE Social Studies: Key Figures in History
- CBASE Social Studies: Early American History
- CBASE Social Studies: Modern American History
- CBASE Social Studies: American Government
- CBASE Social Studies: Geography & Culture
- CBASE Social Studies: Political & Economic Structures
- CBASE Social Studies: Social Science Research
- CBASE Flashcards