BCH 4013: Principles of Biochemistry
Exam 1 EXAM QUESTIONS AND
CORRECT ANSWERS WITH
RATIOANLES (VERIFIED ANSWERS
electrostatic interactions between two fully charged atoms or groups with opposite charges - CORRECT
ANSWERS ionic interactions
electrostatic interaction between H covalently bonded to an electronegative element like O or N -
CORRECT ANSWERS hydrogen bonds
transient electrostatic reactions between permanent or induced dipoles - CORRECT ANSWERS
Van der Waals interactions
Association of nonpolar molecules or groups with each other in aqueous systems - CORRECT ANSWERS
Hydrophobic interactions
A water molecule can form up to ____ hydrogen bonds - CORRECT ANSWERS 4
Water soluble molecules usually contain one or more _____ groups - CORRECT ANSWERS polar
water-loving - CORRECT ANSWERS hydrophillic
contain electronegative atoms(O,N,S) that give rise to unequal sharing of electrons in bonds - CORRECT
ANSWERS polar groups
-NH3+ - CORRECT ANSWERS amino group
, -COO- - CORRECT ANSWERS carboxyl group
P=O-O-O - CORRECT ANSWERS phosphoryl group
insoluble in water (water hating) - CORRECT ANSWERS hydrophobic
Water insoluble molecules are _______, meaning they share electrons equally - CORRECT ANSWERS
non polar
contain both polar and nonpolar groups - CORRECT ANSWERS amphiphilic molecules
amphiphilic molecules tend to form _____ - CORRECT ANSWERS micelles
defines as the negative logarithm of H+ concentration - CORRECT ANSWERS pH
acidic pH - CORRECT ANSWERS less than 7
basic pH - CORRECT ANSWERS higher than 7
neutral pH - CORRECT ANSWERS 7
The smaller the value of pKa, the _____ the acid - CORRECT ANSWERS stronger
solutions that resist change in pH as an acid or base is added - CORRECT ANSWERS buffers
Exam 1 EXAM QUESTIONS AND
CORRECT ANSWERS WITH
RATIOANLES (VERIFIED ANSWERS
electrostatic interactions between two fully charged atoms or groups with opposite charges - CORRECT
ANSWERS ionic interactions
electrostatic interaction between H covalently bonded to an electronegative element like O or N -
CORRECT ANSWERS hydrogen bonds
transient electrostatic reactions between permanent or induced dipoles - CORRECT ANSWERS
Van der Waals interactions
Association of nonpolar molecules or groups with each other in aqueous systems - CORRECT ANSWERS
Hydrophobic interactions
A water molecule can form up to ____ hydrogen bonds - CORRECT ANSWERS 4
Water soluble molecules usually contain one or more _____ groups - CORRECT ANSWERS polar
water-loving - CORRECT ANSWERS hydrophillic
contain electronegative atoms(O,N,S) that give rise to unequal sharing of electrons in bonds - CORRECT
ANSWERS polar groups
-NH3+ - CORRECT ANSWERS amino group
, -COO- - CORRECT ANSWERS carboxyl group
P=O-O-O - CORRECT ANSWERS phosphoryl group
insoluble in water (water hating) - CORRECT ANSWERS hydrophobic
Water insoluble molecules are _______, meaning they share electrons equally - CORRECT ANSWERS
non polar
contain both polar and nonpolar groups - CORRECT ANSWERS amphiphilic molecules
amphiphilic molecules tend to form _____ - CORRECT ANSWERS micelles
defines as the negative logarithm of H+ concentration - CORRECT ANSWERS pH
acidic pH - CORRECT ANSWERS less than 7
basic pH - CORRECT ANSWERS higher than 7
neutral pH - CORRECT ANSWERS 7
The smaller the value of pKa, the _____ the acid - CORRECT ANSWERS stronger
solutions that resist change in pH as an acid or base is added - CORRECT ANSWERS buffers
