Homework 3                     answers to Homework 3

Refer to the figure below for question 1-3:

1.  is this molecule ?             a) a monosaccharide     b) disaccharide            c) a fat                       d) a nucleotide            e) none of these is correct

2.  the covalent link between these molecules is ?           a) a peptide bond     b) hydrogen bond           c) glycosidic bond    e) none of these

3.  the orientation covalent link between these           molecules is ?           a) alpha     b) beta    c) Esther Williams           d) ionic      e) none of these

Refer to the figure below for questions 4-5

4.  The molecule above is classified as a?            a) sugar   b) nucleotide   c) amino acid            d) fat (lipid)        e) none of these

5.  The classification of the above            molecule is as it is because the             molecule is insoluble in an aqueous            environment.    a) true     b) false

refer to the figure below for questions 6-7

6.  The type of weak electrostatic bonds            depicted in A.  is ?            a) ionic bond                  b) van der Walls force            c) hydrophobic attraction            d) hydrophilic  attraction            e) none of the above

7.  The approximate energy required to break            electrostatic bond in the figure above is?            a) greater than 100 Kc/mole            b) over 7,300 Kc/mole            c) between 1 and 5 Kc/mole            d) none of the above

refer to figure below for question 8-9

8.  The molecule above is           a) a nucleotide       b) an amino acid           c) a fatty acid       d) a sugar           e) none of these

9.  Is this molecule?           a) saturated          b) unsaturated           c) neither saturated or unsaturated

Answers to homework 2

1 (b),  2(c),  3(b),  4(d),  5(a),  6(e),  7(c),  8(c)  and 9(a)...