Biol118 Lec 2 Chapter 2 .pptx

Biol118 Lec 2 Chapter 2 .pptx - The Chemical Basis of Life...

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The Chemical Basis of Life Chapter 2
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Undergrad TA OH are posted! Monday Tuesday Wednesday Friday 9:40-10:40 Tanya Nasra Aimee Mullins 10:50-11:50 Vivian Wong Jordan Shaked Kyra Haskes Emily Kuehnle 12:00-1:00 Patricia Canavan Ava Glasser 1:10-2:10 Cole Carpenter Peter Russo Lauren Steffann 2:20-3:20 Erika Yamazaki Kendrick Choi 3:30-4:30 Vivian Wong Marvel Tranquille 4:40-5:40 Ben Rubin Rebecca Chubaryoc Leah Goldberg Marvel Tranquille 5:50-6:50 Cierra Bruck Science 3 Room 215
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How should I study for BIOL118? Review the associated chapter after lecture. Practice retrieving the information… do not copy your notes over and over again, rather you should: practice explaining concepts out loud to yourself or someone else sketch out complicated concepts test yourself with the questions from the book try to anticipate possible multiple choice questions answer the Review questions at the end of every lecture try not to memorize!
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The theory (has evidence to support it) of chemical evolution-inputs of energy led to the formation of increasingly complex carbon- containing substances, culminating in a molecule that could replicate itself. A descendent of this molecule became metabolically active and acquired a membrane….life! How did life begin?
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What is the evidence to support the theory of chemical evolution? Need to understand the substances that were present in early earth to understand how life came from non life. What is the physical structure of the hydrogen, carbon, nitrogen and oxygen atoms found in living cells? What is the structure of the simple substances like water and carbon dioxide? Structure affects function!
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What is the physical structure of the atoms found in living cells? 4 types of atoms make up 96% of the matter on earth: Hydrogen Carbon Nitrogen Oxygen How did these make way to life? Early in earth’s history, these existed only in simple substances like water and carbon dioxide.
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What is the physical structure of the atoms found in living cells?
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What is the physical structure of the atoms found in living cells? Measured in daltons (Da)
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What is the physical structure of the atoms found in living cells?
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What is the physical structure of the atoms found in living cells? The number of protons in an element does not vary. The number of neutrons in an element can vary, these are called isotopes. Isotopes of the same element have
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What is the physical structure of the atoms found in living cells? Atomic weight: The weighted average of all the masses of the naturally occurring isotopes….Atomic weight of carbon is 12.011. The most abunduant version of an isotope will determan its atomic weight
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What is the physical structure of the atoms found in living cells?
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