Chapter 3 The Molecules of Cells Power Point

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Chapter 3 ﺍﻟﺒــﺎﺏ ﺍﻟﺜﺎﻟــﺚ The Molecules of Cells ﺍﻟﺠﺰﻳﺌﺎﺕ ﺍﻟﺨﻠﻮﻳﺔ Power. Point Lectures for

Chapter 3 ﺍﻟﺒــﺎﺏ ﺍﻟﺜﺎﻟــﺚ The Molecules of Cells ﺍﻟﺠﺰﻳﺌﺎﺕ ﺍﻟﺨﻠﻮﻳﺔ Power. Point Lectures for Biology: Concepts & Connections, Sixth Edition Campbell, Reece, Taylor, Simon, and Dickey Copyright © 2009 Pearson Education, Inc. Lecture by Richard L. Myers Translated by Nabih Baeshen

3. 1 Life’s molecular diversity is based on the properties of carbon ﻳﻌﺘﻤﺪ ﺗﻨﻮﻉ

3. 1 Life’s molecular diversity is based on the properties of carbon ﻳﻌﺘﻤﺪ ﺗﻨﻮﻉ ﺍﻟﺠﺰﻳﺌﺎﺕ ﺍﻟﺤﻴﻮﻳﺔ ﻋﻠﻰ ﺧﺼﺎﺋﺺ ﺍﻟﻜﺮﺑﻮﻥ – Carbon skeletons can be branched or unbranched – ﻗﺪ ﻳﺘﻔﺮﻉ ﺍﻟﻬﻴﻜﻞ ﺍﻟﻜﺮﺑﻮﻧﻲ ﺃﻮ ﻻ ﻳﺘﻔﺮﻉ – Therefore, different compounds with the same molecular formula can be produced – ﻟﺬﻟﻚ ﻳﻤﻜﻦ ﺇﻧﺘﺎﺝ ﻣﺮﻛﺒﺎﺕ ﻣﺨﺘﻠﻔﺔ ﺑﻨﻔﺲ ﺍﻟﺼﻴﻐﺔ ﺍﻟﺠﺰﻳﺌﻴﺔ – These structures are called isomers – ﺗﻌﺮﻑ ﻫﺬﻩ ﺍﻟﺘﺮﺍﻛﻴﺐ ﺑﺎﻟﻨﻈﺎﺋﺮ Animation: L-Dopa Animation: Carbon Skeletons Animation: Isomers Copyright © 2009 Pearson Education, Inc.

CARBOHYDRATES ﺍﻟﻜﺮﺑﻮﻫﻴﺪﺭﺍﺕ Copyright © 2009 Pearson Education, Inc.

CARBOHYDRATES ﺍﻟﻜﺮﺑﻮﻫﻴﺪﺭﺍﺕ Copyright © 2009 Pearson Education, Inc.

PROTEINS Copyright © 2009 Pearson Education, Inc. ﺍﻟﺒﺮﻭﺗﻴﻨﺎﺕ

PROTEINS Copyright © 2009 Pearson Education, Inc. ﺍﻟﺒﺮﻭﺗﻴﻨﺎﺕ

3. 14 A protein’s shape depends on four levels of structure ﻳﻌﺘﻤﺪ ﺷﻜﻞ ﺍﻟﺒﺮﻭﺗﻴﻦ

3. 14 A protein’s shape depends on four levels of structure ﻳﻌﺘﻤﺪ ﺷﻜﻞ ﺍﻟﺒﺮﻭﺗﻴﻦ ﻋﻠﻰ ﺃﺮﺑﻌﺔ ﻣﺴﺘﻮﻳﺎﺕ ﻣﻦ ﺍﻟﺘﺮﻛﻴﺐ § Two or more polypeptide chains (subunits) associate providing quaternary structure § ﺗﺘﺤﺪ ﺳﻠﺴﻠﺘﺎﻥ ﺃﻮ ﺃﻜﺜﺮ ) ﻭﺣﺪﺍﺕ ﻓﺮﻋﻴﺔ ( ﻣﻦ ﻣﺘﻌﺪﺩ ﺍﻟﺒﻴﺒﺘﻴﺪ ﻭﻫﻲ ﻓﻲ ﺗﺮﻛﻴﺒﻬﺎ ﺍﻟﺜﺎﻧﻮﻱ ﺃﻮ ﺍﻟﺜﺎﻟﺜﻲ ﻣﻜﻮﻧﺔ ﺍﻟﺘﺮﻛﻴﺐ ﺍﻟﺮﺑﺎﻋﻲ ﻟﻠﺒﺮﻭﺗﻴﻦ – Collagen is an example of a protein with quaternary structure – ﺍﻟﻜﻮﻟﻼﺟﻴﻦ ﻫﻮ ﻣﺜﺎﻝ ﺍﻟﺒﺮﻭﺗﻴﻦ ﻓﻲ ﺗﺮﻛﻴﺒﻪ ﺍﻟﺮﺑﺎﻋﻲ – Its triple helix gives great strength to connective tissue, bone, tendons, and ligaments – ﻳﻌﻄﻲ ﺣﻠﺰﻭﻧﻪ ﺍﻟﺜﻼﺛﻲ ﻗﻮﺓ ﻫﺎﺋﻠﺔ ﻟﻸﻨﺴﺠﺔ ﺍﻟﻀﺎﻣﺔ ﻭﺍﻟﻌﻈﺎﻡ ﻭﺍﻷﻮﺗﺎﺭ ﻭﺍﻷﺮﺑﻄﺔ Animation: Protein Structure Introduction Animation: Primary Protein Structure Animation: Secondary Protein Structure Animation: Tertiary Protein Structure Animation: Quaternary Protein Structure Copyright © 2009 Pearson Education, Inc.

NUCLEIC ACIDS ﺍﻷﺤﻤﺎﺽ ﺍﻟﻨﻮﻭﻳﺔ Copyright © 2009 Pearson Education, Inc.

NUCLEIC ACIDS ﺍﻷﺤﻤﺎﺽ ﺍﻟﻨﻮﻭﻳﺔ Copyright © 2009 Pearson Education, Inc.

Dehydration Short polymer Monomer Hydrolysis Longer polymer

Dehydration Short polymer Monomer Hydrolysis Longer polymer

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