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

10. Dynamics of Microbial Growth

Plating Methods

Microbiology

10. Dynamics of Microbial Growth

Plating Methods

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Multiple Choice

The method is used to isolate microbial colonies while the method is used to count the number of viable microbial cells or colonies.

Spread-plate method; Pour-plate method.

Streak-plate method; Spread-plate method.

Pour-plate method; Steak-plate method.

Pour-plate method; Spread-plate method.

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Verified step by step guidance

Understand the purpose of each method: The streak-plate method is primarily used for isolating individual colonies from a mixed culture, while the spread-plate method is used for counting viable cells or colonies.

Review the streak-plate method: This involves spreading a loopful of culture over the surface of an agar plate in a pattern that thins out the sample, allowing individual colonies to form.

Examine the spread-plate method: This involves spreading a diluted microbial sample evenly across the surface of an agar plate, which allows for the counting of colonies after incubation.

Consider the pour-plate method: This involves mixing the microbial sample with molten agar and pouring it into a petri dish, which can also be used for counting colonies but is not primarily for isolation.

Match the methods to their purposes: Based on the descriptions, identify which method is used for isolation (streak-plate) and which is used for counting viable cells (spread-plate).