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AP Biology Chapter 4 Flashcards

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6109384907Hydroxyl Group-is polar due to electronegative oxygen. -forms hydrogen bonds with water, helping dissolve compounds such as sugars. -compound name: alcohol (specific name usually ends in -ol)0
6109384908Carbonyl Group-sugars with ketone groups are called ketoses; those with aldehydes are called aldoses. -compound name: ketone (carbonyl group is within a carbon skeleton) or aldehyde (carbonyl group is at the end of a carbon skeleton)1
6109384909Carboxyl Group-acts as an acid (can donate H+) because the covalent bond between oxygen and hydrogen is so polar. -compound name: carboxylic acid, or organic acid2
6109384910Amino Group-acts as a base; can pick up an H+ from the surrounding solution (water, in living organisms) -compound name: amine3
6109384911Sulfhydryl Group-two--SH groups can react, forming a "cross-link" that helps stabilize protein structure. -hair protein cross-links maintain the straightness or curliness of hair; in hair salons, permanent treatments break cross-links, then re-form them while the hair is in the desired shape. -compound name: thiol4
6109384912Phosphate Group-contributes negative charge (1 - when positioned inside a chain of phosphates; 2 - when at the end) -when attached, confers on a molecule the ability to react with water, releasing energy. -compound name: organic phosphate5
6109384913Methyl Group-affects the expression of genes when on DNA or on proteins bound to DNA. -affects the shape and function of male and female sex hormones. -compound name: methylated compound6
6109384914Hydrocarbons-molecules with H and C -not in most living things -a component of macromolecules (such as lipids) -nonpolar -release large amounts of energy when involved in reactions7
6109384915Isomers-compounds with the same molecular formula but different structures and proteins8
6109384916Types of Isomers-structural -cis-trans -enantiomers9
6109384917Structural Isomers-isomers that have different covalent arrangements of their atoms... aka same structure different arrangement10
6109384918Cis-Trans Isomers-isomers that have the same covalent bonds but differ in spatial arrangements... aka same formula, different positioning around a double bond11
6109384919Enantiomers-same formula, mirror image positioning around a central carbon -biological systems tend to use only one of any two of this form -all cells use D-sugars, and L-amino acids12
6109384920Adenosine Triphosphate (ATP)-the potential to react with water, a reaction that releases energy to be used by the cell13
6109384921Functional Groups-the components of organic molecules that are most commonly involved in chemical reactions14

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