WGU Biochemistry OA exam with all correct answers
Bohr Effect chart (low pH) C- High CO2 H- High H+ A- Acidic R-Release of O2(rt. Shift) T- tense state (in tissues) Primary structure Sequence of amino acids that make up a protein Secondary Structure Sequence of amino acids fold. Tertiary Structure -more folding in a 3D shape. -R groups (side chains) Quaternary Structure Protein has more than 1 polypeptide chain. Chemical reaction -absorb and release energy -activation energy -energy is released (heat & light) when bonds are broken. Exothermic reaction Exo=to release Thermo=heat -chemical reaction that releases more energy than it absorbs (as heat & light) Example of exothermic reaction Cellular respiration- breaks down glucose to make cellular energy Endothermic reaction Endo=absorb Thermos=heat -absorbs more energy than it releases Example of endothermic reaction Photosynthesis- takes in light to break down to create glucose Catalyst Substance that will decrease the activation energy needed to start a chemical reaction Enzymes -catalysts used by cells -increase the rate of chemical reaction -specific to substrates Enzyme structure -they are proteins -twist, fold, bend to final shape -shape attracts specific molecules
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