Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

2. Cell Chemistry & Cell Components

Prokaryotic & Eukaryotic Cells

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Prokaryotic & Eukaryotic Cells

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2:50 minutes

Problem 5

Textbook Question

Which of the following cell structures would you expect to be most important in the growth of bacteria on the surface of your teeth?a. cell wallb. fimbriaec. flagellad. cilia

Verified step by step guidance

Identify the function of each cell structure option provided.

Understand that bacteria on the surface of teeth need to adhere to the surface to grow effectively.

Recognize that fimbriae are hair-like structures that help bacteria attach to surfaces.

Consider the role of other structures: cell wall provides shape and protection, flagella are used for movement, and cilia are not present in bacteria.

Conclude that the structure most important for bacterial growth on teeth surfaces is the one that aids in attachment.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Cell Wall

The cell wall is a rigid structure that surrounds the cell membrane of bacteria, providing shape and protection. It is crucial for maintaining the integrity of bacterial cells, especially in varying environmental conditions. In the context of bacteria on teeth, the cell wall helps bacteria adhere to surfaces and resist mechanical forces.

Fimbriae

Fimbriae are short, hair-like projections on the surface of bacterial cells that facilitate adhesion to surfaces, including host tissues. They play a significant role in the colonization of bacteria, allowing them to stick to teeth and form biofilms. This is particularly important in dental health, as biofilms can lead to plaque formation and cavities.

Flagella

Flagella are long, whip-like structures that enable bacterial motility, allowing them to move toward favorable environments or away from harmful substances. While flagella are important for movement, their role in the growth of bacteria on teeth is less significant compared to structures that promote adhesion, such as fimbriae.