BIS 102 MIDTERM 1 STUDY QUESTIONS WITH
VERIFIED ANSWERS; 100% CORRECT
_______ interactions are between oppositely charged atoms or
groups. The strength of these depends on the ________ of the
ions and the _______ between them. In proteins, these are
sometimes called _______ and are based on
attraction/repulsion. - correct answer- ionic,
environment, distance, salt bridges
_______ interactions happen when 2 uncharged atoms are very
close. Random variations in the electron clouds surrounding the
nucleus can create a ______ dipole, which induces an _______
transient dipole in a nearby atom and weak attraction ensues. If
the nuclei are too close, the electron cloud will ____ the atoms,
therefore net attraction is maximal at a certain point. -
correct answer- van der waals, transient, opposite, repel
-live evolved around this: rxns occur in aqueous environments,
critical determinant of structure and function of proteins, nucleic
acids, and membranes - correct answer- water
a negative delta H indicates our reaction is _______ and the
system will release heat (products have lower heat content than
reactants) - correct answer- exothermic
, a positive delta G indicates our reaction is _______ and will
absorb energy. - correct answer- endergonic
a positive delta H indicates our reaction is _______ and the
system will take up heat from its surroundings. - correct
answer- endothermic
a positive delta S indicates ______ is increasing in
randomness/disorder (more molecules or more freedom of
movement) - correct answer- entropy
actual free energy change - correct answer- delta G
amount of free energy available to do work, measured in
J/mol*K when reaction is at constant temp and pressure. -
correct answer- delta G
aromatic compounds are relatively _______ and _______. The
OH on TYR and the NH on TRP can participate in _______. -
correct answer- nonpolar, hydrophobic, H bonding
VERIFIED ANSWERS; 100% CORRECT
_______ interactions are between oppositely charged atoms or
groups. The strength of these depends on the ________ of the
ions and the _______ between them. In proteins, these are
sometimes called _______ and are based on
attraction/repulsion. - correct answer- ionic,
environment, distance, salt bridges
_______ interactions happen when 2 uncharged atoms are very
close. Random variations in the electron clouds surrounding the
nucleus can create a ______ dipole, which induces an _______
transient dipole in a nearby atom and weak attraction ensues. If
the nuclei are too close, the electron cloud will ____ the atoms,
therefore net attraction is maximal at a certain point. -
correct answer- van der waals, transient, opposite, repel
-live evolved around this: rxns occur in aqueous environments,
critical determinant of structure and function of proteins, nucleic
acids, and membranes - correct answer- water
a negative delta H indicates our reaction is _______ and the
system will release heat (products have lower heat content than
reactants) - correct answer- exothermic
, a positive delta G indicates our reaction is _______ and will
absorb energy. - correct answer- endergonic
a positive delta H indicates our reaction is _______ and the
system will take up heat from its surroundings. - correct
answer- endothermic
a positive delta S indicates ______ is increasing in
randomness/disorder (more molecules or more freedom of
movement) - correct answer- entropy
actual free energy change - correct answer- delta G
amount of free energy available to do work, measured in
J/mol*K when reaction is at constant temp and pressure. -
correct answer- delta G
aromatic compounds are relatively _______ and _______. The
OH on TYR and the NH on TRP can participate in _______. -
correct answer- nonpolar, hydrophobic, H bonding
