Biology: Properties of Molecules and Bonds

The video tutorial explains the concepts of hydrophobic and hydrophilic substances, using glucose as an example of a hydrophilic molecule that dissolves in water due to its polar nature. It contrasts this with nonpolar, hydrophobic substances that do not mix with water, like oil. The tutorial emphasizes the principle of 'like dissolves like' and provides a brief review of the concepts. It also mentions additional resources for further learning.

What type of molecule is glucose?

• Hydrophilic

• Nonpolar

• Ionic

• Hydrophobic

What type of bond is found between oxygen and hydrogen in glucose?

• Polar covalent bond

• Nonpolar covalent bond

• Metallic bond

• Ionic bond

Why do nonpolar molecules not mix well with water?

• They are heavier than water

• They are hydrophilic

• They form ionic bonds with water

• They do not form hydrogen bonds with water

What happens when oil is mixed with water?

• Oil sinks to the bottom

• Oil reacts chemically with water

• Oil forms a layer on top of water

• Oil dissolves in water

What is the term for substances that dissolve in water?

• Ionic

• Hydrophilic

• Nonpolar

• Hydrophobic

Which type of bond is associated with nonpolar molecules?

• Polar covalent bond

• Ionic bond

• Nonpolar covalent bond

• Hydrogen bond

What is the principle that explains why polar substances dissolve in water?

• Hydrophobic effect

• Covalent bonding

• Like dissolves like

• Opposites attract

What is a characteristic of hydrophobic substances?

• They form hydrogen bonds with water

• They repel water

• They are polar

• They dissolve in water

Where can students find additional resources and tutoring for biology?

• Biology department

• Local library

• City referencing building

• Online forums

Which edition of Campbell Biology is referenced in the video?

• 12th edition

• 11th edition

• 10th edition

• 9th edition