Table of contents

1. Introduction to Microbiology3h 21m
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

3. Chemical Principles of Microbiology

Atoms- Smallest Unit of Matter

Microbiology

3. Chemical Principles of Microbiology

Atoms- Smallest Unit of Matter

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2:00 minutes

Problem 2.1a

Textbook Question

Which of the following structures have no electrical charge?

a. protons
b. electrons
c. neutrons
d. ions

Verified step by step guidance

Identify the basic subatomic particles: protons, electrons, and neutrons.

Recall the charges of each subatomic particle: protons are positively charged, electrons are negatively charged, and neutrons have no charge.

Understand that ions are atoms or molecules that have gained or lost electrons, resulting in a net positive or negative charge.

Determine which of the listed structures have no electrical charge by considering their definitions and properties.

Conclude that the structure with no electrical charge is the one that is neutral, based on the information about subatomic particles and ions.

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Key Concepts

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

Atomic Structure

The atomic structure consists of protons, neutrons, and electrons. Protons carry a positive charge, electrons carry a negative charge, and neutrons are neutral, meaning they have no charge. Understanding this structure is essential for identifying the charge of different particles.

Charge of Subatomic Particles

Subatomic particles are categorized by their electrical charge: protons are positively charged, electrons are negatively charged, and neutrons are uncharged. This distinction is crucial for understanding how these particles interact and form atoms, which are the building blocks of matter.

Ions

Ions are atoms or molecules that have gained or lost one or more electrons, resulting in a net electrical charge. Cations are positively charged ions (loss of electrons), while anions are negatively charged ions (gain of electrons). Recognizing the nature of ions helps in understanding their behavior in chemical reactions.