Table of contents

1. Introduction to Microbiology3h 22m
2. Disproving Spontaneous Generation1h 18m
3. Chemical Principles of Microbiology3h 38m
4. Water1h 28m
5. Molecules of Microbiology2h 23m
6. Cell Membrane & Transport3h 28m
7. Prokaryotic Cell Structures & Functions5h 52m
8. Eukaryotic Cell Structures & Functions2h 18m
9. Microscopes2h 46m
10. Dynamics of Microbial Growth4h 36m
11. Controlling Microbial Growth4h 10m
12. Microbial Metabolism5h 16m
13. Photosynthesis2h 31m
14. DNA Replication2h 25m
15. Central Dogma & Gene Regulation7h 14m
16. Microbial Genetics4h 44m
17. Biotechnology3h 0m
18. Viruses, Viroids, & Prions4h 56m
19. Innate Immunity7h 15m
20. Adaptive Immunity7h 14m
21. Principles of Disease6h 57m

8. Eukaryotic Cell Structures & Functions

Cell Junctions

Microbiology

8. Eukaryotic Cell Structures & Functions

Cell Junctions

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Multiple Choice

Ions can travel directly from the cytoplasm of one animal cell to the cytoplasm of an adjacent cell through:

Gap junctions.

Desmosomes.

Tight junctions.

Intermediate filaments.

Plasmodesmata.

Actin filaments.

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Verified step by step guidance

Understand the concept of cell junctions: Cell junctions are structures that connect cells to each other, allowing communication and transport of molecules between them.

Identify the types of cell junctions: The main types include gap junctions, desmosomes, tight junctions, and plasmodesmata. Each has a specific function and structure.

Focus on gap junctions: Gap junctions are specialized intercellular connections that facilitate direct communication between the cytoplasm of adjacent cells. They allow ions and small molecules to pass through, enabling electrical and metabolic coupling.

Differentiate gap junctions from other junctions: Unlike desmosomes and tight junctions, which primarily provide structural support and barrier functions, gap junctions specifically allow the passage of ions and small molecules.

Consider the context of animal cells: In animal cells, gap junctions are the primary means for ions to travel directly between the cytoplasm of adjacent cells, unlike plasmodesmata, which are found in plant cells.