Answers_to_Study_Guide_2_2011

Answers_to_Study_Guide_2_2011 - ATP . The amino group makes...

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Answers to Study Guide 2 (Kopachik) Fill in the blank: Carbon has __4_ valence electrons and can form a _tetrahedron_ -shaped molecule around the _ asymmetric carbon. Left-handed and right-handed versions of glycine are called _enantiomers_ . Geometric isomers come in _ cis and _ trans structures relative to a planar double bond. The nonpolar C-H bonds result in a _ hydrophobic molecule unable to dissolve easily in water. There are three _ hydrocarbon tails on fats used to store energy. For small molecules the _ functional groups determine the chemistry and _ function _possible for that molecule. In macromolecules functional groups also play a large role in their structure. All but the _ methyl group aid in increasing the molecule’s solubility in water. The _ phosphate functional group is most associated with making high energy bonds in the energy currency molecule
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Unformatted text preview: ATP . The amino group makes the molecule a base whereas the _ carboxyl group makes the molecule an acid. The _ carbonyl group formula C=O is called an aldehyde if on the end of the molecule. The _ sulfhydryl group on the amino acid cysteine is often used to form cross-links within or between proteins. There are many examples of proteins having their function change by_ phosphorylation or dephosphorylation . Make a chart of the seven main functional groups, giving the name, chemical formula, and the name of a molecule in which the group is found. 1. Hydroxyl-OH alcohols 2. Carbonyl C=O aldehydes and ketones, sugars 3. Carboxyl-COOH organic acids, amino acids 4. Amino-NH 2 amines, amino acids, 5. Sulfhydryl-SH thiols, cysteine 6. Phosphate-PO 4 ATP, organic phosphates 7. Methyl-CH 3 cytidine, testosterone...
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