About This Chapter
Who's it for?
Anyone who needs help learning or mastering high school biology material will benefit from taking this course. There is no faster or easier way to learn biology. Among those who would benefit are:
- Students who have fallen behind in understanding cells and bacterial biology
- Students who struggle with learning disabilities or learning differences, including autism and ADHD
- Students who prefer multiple ways of learning science (visual or auditory)
- Students who have missed class time and need to catch up
- Students who need an efficient way to learn about bacterial biology
- Students who struggle to understand their teachers
- Students who attend schools without extra science learning resources
How it works:
- Find videos in our course that cover what you need to learn or review.
- Press play and watch the video lesson.
- Refer to the video transcripts to reinforce your learning.
- Test your understanding of each lesson with short quizzes.
- Verify you're ready by completing the bacterial biology chapter exam.
Why it works:
- Study Efficiently: Skip what you know, review what you don't.
- Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
- Be Ready on Test Day: Use the bacterial biology chapter exam to be prepared.
- Get Extra Support: Ask our subject-matter experts any bacterial biology question. They're here to help!
- Study With Flexibility: Watch videos on any web-ready device.
Students will review:
This chapter helps students review the concepts in a bacterial biology unit of a standard high school biology course. Topics covered include:
- Aerobic bacterial metabolism
- Anaerobic bacterial metabolism
- Bacterial fermentation
- Bacterial structures and activities
- Host cells and model organisms
1. Bacterial Cell Morphology and Classification: Definition, Shapes & Arrangements
Do all bacteria look the same? Definitely not! These tiny, singled-celled organisms come in a variety of morphologies, from cocci to spirals to tetrads. Many bacterial names even have clues to their morphology!
2. Bacterial Cytoplasm & Cell Membrane: Structure & Components
Some people say a bacterial cell is just a simple bag of enzymes. This couldn't be further from the truth! Learn about the structure and function of the bacterial cell membrane, what's in the cytoplasm, and how membrane surface area impacts bacterial size.
3. Bacterial Cell Walls: Structure, Function & Types
The bacterial cell wall has to be strong to prevent cell lysis but also porous to allow transport across the cell membrane. In this lesson, we will examine the structure of the bacterial cell wall and how it accomplishes both of these crucial tasks.
4. Bacterial Structures and Their Functions
A bacterial cell is not smooth like a balloon. Bacteria can be covered with a wide range of structures like pili and capsules that give each species of bacteria different abilities. In this lesson, you will learn about several of these key external structures of bacteria.
5. Bacterial Endospores: Definition & Formation
Some bacteria have the ability to enter a state of suspended animation when conditions are unfavorable. In this lesson, we will examine the bacterial endospore and learn how and why bacteria produce these structures.
6. The Bacterial Genome: Structure & Organization
All organisms have DNA. While the basic structure of DNA is the same, the organization of the DNA in bacterial cells is very different than in human or animal cells. In this lesson we will explore the basics of the bacterial genome.
7. Bacterial Plasmids: Definition, Function & Uses
What if you could pick up bits of DNA and change your traits? In the animal kingdom, organisms are born with their lifetime total of DNA. In the bacterial world, cells can add to their genome by acquiring plasmids.
8. Bacterial Conjugation: Definition & Protocol
You probably didn't know that bacteria can engage in sexual reproduction. It is not what you think. In this lesson we will explore the process of bacterial conjugation and its impact on genetic variability in bacteria.
9. Bacterial Transformation: Definition, Process & Applications
DNA is all around you. So are bacteria. Did you know that those bacteria can pick up and use that DNA? In this lesson we will examine the process of transformation and how bacteria are able to make use of environmental DNA.
10. Bacterial Transduction: Definition, Process & Advantages
Genetic diversity allows organisms to adapt to changing environmental conditions. In this lesson, we will explore bacterial transduction and how it allows bacteria to transfer genes and increase genetic diversity.
11. Aerobic Bacterial Metabolism: Definition & Process
Respiration is the process of converting nutrients into usable energy. Several different mechanisms exist in the bacterial world. In this lesson, we will examine the role of oxygen in bacterial aerobic respiration.
12. Anaerobic Bacterial Metabolism: Definition & Process
Bacteria are metabolically versatile and can grow in a range of environments. Many bacteria grow in environments without oxygen using anaerobic respiration and fermentation. This lesson will discuss the process of anaerobic respiration in bacteria.
13. Bacterial Fermentation Process & Products
Bacteria in anaerobic environments can break down organic compounds using fermentation. If you have ever eaten a fermented food, such as bread, yogurt or cheese, you have tasted the products of fermentation. Now, learn the details of this process.
14. Escherichia coli (E. coli) as a Model Organism or Host Cell
A model organism can help scientists perform faster and more efficient biological research. This lesson examines the most utilized model organism, E. coli, and looks at the major characteristics that make it a perfect model.
15. Growth Requirements of E. coli. and Auxotrophs
Escherichia coli is a normal inhabitant of your gastrointestinal tract. In this lesson we will examine the conditions required for optimal growth of E. coli both in your colon and in culture.
16. Louis Pasteur: Experiments, Contribution & Theory
Did you know it was once believed that non-living things, like grain, could produce living things like mice? This idea was widely held until the mid-1890s! Louis Pasteur finally disproved this theory, and this lesson will tell you how.
17. Operon: Definition & Sequencing
This lesson explains the basic of bacterial genes called operons. We will learn what operons are and how they help bacteria be more efficient in making things they need!
18. Peptidoglycan: Definition, Function & Structure
In this lesson, discover the role that the peptidoglycan layer of the bacterial cell plays in protecting bacteria. Learn what comprises the peptidoglycan layer and how the cell wall differs between gram-negative and gram-positive bacteria.
19. Do Bacteria Cells Have DNA?
Bacteria are single-celled organisms known as prokaryotes. As such simple life forms, do they have any need for genetic information in the form of DNA? Find out more in this lesson, as you learn about chromosomal loops and plasmids.
20. Bacterial Chromosome: Definition & Structure
You have chromosomes in your cells that allow you pass on genetic information, and so do bacteria. Bacteria have single, circular chromosomes, along with extra pieces of DNA called plasmids. The chromosomes and plasmids store all of a bacterium's DNA.
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