Harper BIO101 Ch 2 and 3 Homework Chemistry and Organic Molecules Latest 2020 MAY

BIO101 Biology Survey

Ch 2 and 3 Homework Chemistry and Organic Molecules

1.  Define the Following:

A.  Atomic Number: This

B. Mass Number (Atomic Mass):

C.  Valence Electron:

D.  Covalent Bond:

E.  Ionic Bond:

F.  Hydrogen Bond:

G.  Organic Molecule:

H.  Inorganic Molecule:

2.  Complete the following table for the properties of protons, neutrons, and electrons.

3.A.  What is the difference between a polar and a nonpolar covalent bond? 

    B.  Give an example of a molecule that contains each. 

4.Describe the differences between acids and bases and explain their relationship to the pH scale.

5.  Why is water a polar molecule? 

 6.  Water has many unique properties that make it essential to life on earth.  Explain how water’s polarity is involved in each of these properties.  Give an example of each phenomenon.

7.  A.  Describe what happens during a dehydration synthesis reaction.

List the three types of organic macromolecules discussed in class.  What is the subunit of each molecule?  List several functions of each type of molecule.(Do not include lipids here.)

8.  What are the components of a fat?  How is this structure different than a steroid?