BCHM 270 Module 2 Questions and Answers 100% Pass

BCHM 270 Module 2 Questions and Answers 100% Pass Transient interactions between molecules that can be continuously broken and reformed - Correct Answer️️ -non-covalent bonds What type of scenario would make non-covalent bonds stronger? - Correct Answer️️ - when many are combined together together in a macromolecule or between molecules electrostatic interactions are also called: - Correct Answer️️ -ionic interactions or salt bridges Interactions between positive and negatively charged molecules - Correct Answer️️ - electrostatic/ionic/salt bridges (all the same) how is it possible for bonds to form between different molecules? - Correct Answer️️ - molecules like DNA and protein have charge throughout the entire molecule allowing electrostatic bonds to form measurement of polarity of a chemical bond within a molecule - Correct Answer️️ - dipole moment Dipole moment are represented with an arrow going from which direction? - Correct Answer️️ -from partial positive to partial negative What significance do dipole moments have within molecules? - Correct Answer️️ - allows for the molecules to line up properly so the charges can attract to max. electrostatic bond The most important non-covalent bond in biochem - Correct Answer️️ -hydrogen bond the components of a hydrogen bond - Correct Answer️️ -Hydrogen acceptor hydrogen donor When a H atom is covalently bound to an highly electronegative atom, the strong dipole moment occurs giving hydrogen which type of charge? - Correct Answer️️ -partial positive, making the electronegative atom the hydrogen donor A hydrogen bond acceptor - Correct Answer️️ -an atom with a lone pair of electrons (most often N or O) The partial positive charge on the H bound to the donor interacts with: - Correct Answer️️ -the lone pair of electrons through strong electrostatic interactions Hydrophobic and hydrophilic are terms used to describe which type of bonds? - Correct Answer️️ -non covalent Give an example of an amphipathic molecule - Correct Answer️️ -phospholipid hydrocarbons and aliphatic structures are hydrophobic/hydrophillic and polar/nonpolar - Correct Answer️️ -hydrophobic non-polar The entropy of a system increasing in spontaneity is the reason hydrophobic interactions cluster together. T/F - Correct Answer️️ -true. Not the non-polar interactions When the water form a cage around the molecule, what happens to the entropy? - Correct Answer️️ -decreases (less disorder) when non polar molecules associate with one another, the entropy increases/decreases - Correct Answer️️ -increases. reduction of the water that is ordered membrane formation and protein folding are biological effects th