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By | Feb. 2013
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1.| The stability of the three-dimensional shape of many large molecules is dependent on| | A.| covalent bonds.|
B.| ionic bonds.|
C.| hydrogen bonds.|
D.| van der Waals attractions.|
E.| hydrophobic interactions.|
|
See Concept 2.2: Atoms Interact and Form Molecules
| Points Earned:| 0/1|
Correct Answer:| C|
Your Response:| A|
2.| Which of the following statements about water is true?| | A.| Water has a low heat of vaporization.|
B.| Water has a high specific heat.|
C.| When water freezes, it gains energy from the environment.| D.| All of the above|
E.| None of the above|
|
See Concept 2.2: Atoms Interact and Form Molecules
| Points Earned:| 1/1|
Correct Answer:| B|
Your Response:| B|
3.| Which of the following statements about chemical reactions is true?| | A.| The bonding partners of atoms remain constant.|
B.| All reactions release energy as they proceed.|
C.| The bonding partners of atoms change.|
D.| All reactions consume energy as they proceed.|
E.| None of the above|
|
See Concept 2.5: Biochemical Changes Involve Energy
| Points Earned:| 0/1|
Correct Answer:| C|
Your Response:| E|
4.| Which of the following is not a polymer?|
| A.| A protein|
B.| A nucleic acid, such as DNA|
C.| A polysaccharide carbohydrate|
D.| A lipid|
E.| All of the above are polymers.|
|
See Concept 2.2: Atoms Interact and Form Molecules
| Points Earned:| 1/1|
Correct Answer:| D|
Your Response:| D|
5.| Cellulose and starch are composed of the same monomers but have structural and functional differences. Which of the following is the characteristic that accounts for those differences?| | A.| Different types of glycosidic linkages|

B.| Different numbers of glucose monomers|
C.| Different types of bonds holding them together|
D.| A linear shape in one versus a ring shape in the other| E.| None of the...
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