Chapter 21 Biochemistry. EXIT Copyright © by McDougal Littell. All rights reserved.2 Figure 21.2: The 20 -amino acids found in most proteins. Figure 21.2:

Chapter 21Chapter 21

Biochemistry

Copyright © by McDougal Littell. All rights reserved. 2 EXIT

Figure 21.2: The 20 Figure 21.2: The 20 -amino acids found in most proteins.-amino acids found in most proteins.


Figure 21.4: Primary structure of a protein.Figure 21.4: Primary structure of a protein.


Figure 21.4: Secondary structure of a protein.Figure 21.4: Secondary structure of a protein.


Figure 21.5: Figure 21.5: One type of One type of secondary secondary

protein protein structure is structure is

called the called the --helix.helix.


Figure 21.6: Two protein chains bound together.Figure 21.6: Two protein chains bound together.


Figure 21.7: Figure 21.7: Collagen.Collagen.


Figure 21.7: Figure 21.7: Silk fiber.Silk fiber.


Figure 21.8: The protein myoglobin.Figure 21.8: The protein myoglobin.


Figure 21.9: The permanent waving of hair.Figure 21.9: The permanent waving of hair.


Figure 21.10: Schematic representation of the thermal denaturation of a protein.Figure 21.10: Schematic representation of the thermal denaturation of a protein.


Figure 21.11: Lock-and-key model of the functioning of an enzyme.Figure 21.11: Lock-and-key model of the functioning of an enzyme.


Figure 21.12: Figure 21.12: Formation Formation

of a ring of a ring structure for structure for

fructose.fructose.


Figure 21.13: Sucrose formed from glucose and fructose.Figure 21.13: Sucrose formed from glucose and fructose.


Figure 21.14: The making of starch.Figure 21.14: The making of starch.


Figure 21.15: Deoxyribose.Figure 21.15: Deoxyribose.


Figure 21.15: Ribose.Figure 21.15: Ribose.


Figure 21.16: Organic bases found in DNA and RNA.Figure 21.16: Organic bases found in DNA and RNA.


Figure 21.17: (a) Formation of Adenosine.Figure 21.17: (a) Formation of Adenosine. (b) Reaction of phosphoric acid with adenosine. (b) Reaction of phosphoric acid with adenosine.


Figure 21.18: Figure 21.18: Portion of a Portion of a

typical typical nucleic acid nucleic acid

chain.chain.


Figure 21.19: Figure 21.19: DNA double DNA double

helix.helix.


Figure 21.19: Thymine-adenine pairs.Figure 21.19: Thymine-adenine pairs.


Figure 21.19: Cystosine-guanine pairs.Figure 21.19: Cystosine-guanine pairs.


Figure 21.20: Figure 21.20: Cell division of Cell division of a DNA double a DNA double

helix.helix.


Figure 21.21: Construction of the mRNA molecule.Figure 21.21: Construction of the mRNA molecule.


Figure 21.22: Two-dimensional slice of a micelle of fatty-acid anions.Figure 21.22: Two-dimensional slice of a micelle of fatty-acid anions.


Figure 21.23: Soap micelles absorbing grease molecules.Figure 21.23: Soap micelles absorbing grease molecules.


Figure 21.24: Lecithin, a phospholipid.Figure 21.24: Lecithin, a phospholipid.


Figure 21.25: Several common steroids and steroid derivatives.Figure 21.25: Several common steroids and steroid derivatives.

Chapter 21 Biochemistry. EXIT Copyright © by McDougal Littell. All rights reserved.2 Figure 21.2: The 20 -amino acids found in most proteins. Figure 21.2:

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