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

3. Chemical Principles of Microbiology

Hydrogen Bonding

Microbiology

3. Chemical Principles of Microbiology

Hydrogen Bonding

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Multiple Choice

What property of the bond between a Hydrogen (H) atom and an Oxygen (O) atom in a molecule of water
makes it a polar bond?

O and H are equally electronegative.

O is more electronegative than H.

H is more electronegative than O.

Water molecules form ionic bonds with one another.

Hydrogen bonds form between H and O.

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Verified step by step guidance

Understand the concept of electronegativity: Electronegativity is the ability of an atom to attract shared electrons in a chemical bond. In a polar bond, one atom is more electronegative than the other, causing an unequal sharing of electrons.

Identify the atoms involved: In a water molecule (H2O), the bond in question is between a Hydrogen (H) atom and an Oxygen (O) atom.

Compare the electronegativities: Oxygen (O) is more electronegative than Hydrogen (H). This means that Oxygen will attract the shared electrons more strongly than Hydrogen.

Determine the effect on the bond: Because Oxygen is more electronegative, the electrons in the bond are pulled closer to the Oxygen atom, creating a partial negative charge on the Oxygen and a partial positive charge on the Hydrogen.

Conclude the bond type: This unequal sharing of electrons results in a polar covalent bond, where the bond has a dipole moment due to the difference in electronegativity between the two atoms.