BIOLOGY 173 Lecture Notes - Lecture 5: The Terminal, Ribose, Cytosine
12 Sep 2016
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Bad shape can lead to diseases like cycle- cell anemia. *enzymes catalysts speed up the rate of reactions. Transport proteins (hemoglobin carries oxygen and carbon dioxide) Enzymes biological catalysts; cause reaction rates to increase: mechanism of enzyme action: Substrates bond to the active sited of the enzyme. The substrates fuse together to create a product. The product is released from the enzyme, the enzyme returns to its original shape and can be reused in other reactions: enzymes increase reaction rates. Reactants (substrates) require an input of energy (activation energy) to initiate the reaction. When substrate levels are high and all active sites are occupied the enzymes are considered saturated and the reaction rate plateaus: nucleic acids. Made of subunits called nucleotides: there are three subunits: Two types of nucleic acids: deoxyribonucleic acid: dna. Nitrogenous base (one of the following four: pyrimidines. Remember (c & t are cute and tiny: purines.
