BIO1140 Chapter 2 - The Chemistry of the Cell

BIO1140 Chapter 2 - The Chemistry of the Cell - Cellular...

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Cellular Biology Chapter 2 – The Chemistry of the Cell Main Points of Chapter The importance of carbon o Carbon atom has several unique properties that make it suitable to be the backbone of important biological molecules The importance of water o Chemistry of cells is the chemistry of water soluble molecules because water molecules have several unique properties that make it especially suitable as a universal solvent The importance of selectively permeable membranes o Membranes do not dissolve in water however they have different permeability’s to specific solutes. This allows the to control the movements of molecules and ions into and out of the cell The importance of synthesis by polymerization of small molecules o Most important molecules are small, water-soluble, organic molecules that can be transported across the membrane through diffusion or transported by macromolecules o The synthesis of polymers from small molecules is important in order to build polymers such as proteins, etc. The importance of self-assembly o Proteins/ other macromolecules which are made of repeating monomers (subunits) are capable to self-assemble in order to create high levels of structural organization o This is possible because the information in order to for it to occur is in our genes o Molecular chaperons assist in the assembly process by inhibiting incorrect interactions that would lead to inactive structures Chemistry of life - life obeys all natural laws - life as we know it is carbon based - organic chemistry = biological chemistry = biochemistry - all of life’s chemical reactions occur in aqueous solutions - life is a cold temperature phenomenon o Temperature ranges from absolute zero to millions of degrees C. This makes the temperature at which we function on the colder side. - the chemistry of life is immensely complex - biochemistry is dominated by very large polymers
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Cellular Biology Chapter 2 – The Chemistry of the Cell Importance of Carbon Study of carbon-containing compounds is the study of organic chemistry Organic chemistry – includes all classes of carbon containing compounds (including the synthesized ones) Biological chemistry deals specifically with the chemistry of living systems and forms one of the strands of modern cell biology Carbon atom – the most important atom in biological molecules. Diversity and stability is due to specific properties of the carbon atom and its interactions with other carbon atoms/ elements Important properties o Valence of 4 electrons
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This note was uploaded on 06/17/2008 for the course BIO 1140 taught by Professor Fenwick during the Winter '07 term at University of Ottawa.

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BIO1140 Chapter 2 - The Chemistry of the Cell - Cellular...

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