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BIOCHEM 132: Chapter 2 Quiz

Total questions: 22

Worksheet time: 11mins

Name
Class
Date
1.

Water’s oxygen atom forms covalent bonds with two hydrogen atoms. True or False?

a)

True

b)

False

2.

Water is a nonpolar molecule. True or False?

a)

True

b)

False

3.

Water is not highly cohesive. True or False?

a)

True

b)

False

4.

Water has high surface tension. True or False?

a)

True

b)

False

5.

Hydrogen bonds are one type of electrostatic force. True or False?

a)

True

b)

False

6.

Hydrogen bonds are covalent bonds. True or false ?

a)

True

b)

False

7.

There are covalent interactions between the carboxylate and amino groups of an amino acid. True or False?

a)

True

b)

False

8.

Complementarity of bases in DNA and RNA is determined by their ability to form hydrogen bonds with eachother. True or False?

a)

True

b)

False

9.

Van der waals interactions are weaker than hydrogen bonds. True or False?

a)

True

b)

False

10.

Van der waals interactions occur between not charged particles that are polar. True or False ?

a)

True

b)

False

11.

Dipole-Dipole interactions occur between two strongly nonpolar groups. True or False?

a)

True

b)

False

12.

London dispersion forces are weaker than van der waals interactions. True or False?

a)

True

b)

False

13.

London dispersion forces occur between non polar molecules. True or False?

a)

True

b)

False

14.

Hydrophilic means the molecules like water. True or False?

a)

True

b)

False

15.

Hydrophobic means the molecules fear water. True or False?

a)

True

b)

False

16.

Amphiphilic molecules are both hydrophobic and hydrophilic. True or False?

a)

True

b)

False

17.

Micelles can be formed by amphiphiles. True or False?

a)

True

b)

False

18.

Lipid bilayers can form vesicles. true or false?

a)

True

b)

False

19.

Which of these terms matches the following definition: describes an acids tendency to ionize.

a)

pK

b)

Ka

c)

pKa

d)

None of the above

20.

Which of these terms matches the following definition: acid dissociation constant.

a)

pK

b)

Ka

c)

pKa

d)

None of the above

21.

Which of these terms matches the following definition: is equal to pK.

a)

pK

b)

Ka

c)

pKa

d)

None of the above

22.

The weak acid/conjugate base system acts as a buffer. True or False?

a)

True

b)

False