Unit 23 Q2-17

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Q2-17. The chemical principles described in this chapter are important because all cells are made up of chemicals. They may be very diverse, but the reactions all follow the same rules. To understand the complexity of cell biology, we must first understand the basic chemical principles in this chapter.
Q2-19. Noncovalent bonds specify the shape of macromolecules. Hydrogen bonds, Electrostatic attractions, Van Der Waals attractions, and hydrophobic interactions
Q2-20. Amphipathic molecules are molecules that have both hydrophobic and hydrophilic parts. The hydrophilic ends like water, so they tend to hydrogen-bond to the water molecules. The hydrophobic ends do not like water, so they tend to stay away from the water molecules and expose themselves