Chapter 2, Quiz 3

 

Biology Campbell/Reece Chapter 2 Quiz 3 pp. 36 – 39

1.  Name one strong chemical bond.

2.  Name two (of the three discussed) weak chemical bonds.

3.  Chemical bonds happen between atoms to make molecules of compounds, but they

also can happen between ______________.

4.  Why would you want a bond to not be strong?

E.C.  Explain in detail what a hydrogen bond is.

5.  In a water atom, the oxygen has a slight __________ charge and the hydrogens have a

slight ___________ charge.

E. C. Why?

6.  What is a “hot spot” of charge within a molecule, or why does it ocurr?

7.  A molecule’s biological function is strongly related to its _______________.

8.  When the orbitals “hybridize” in a molecule to form teardrops instead of spheres and dumbbells, what pyramidal shape is sometimes formed?

E. C.  What angle do the two hydrogen atoms in a water molecule sit at in relation to the oxygen atom?

9.  Give an example of the importance of shape in receiving and signaling molecules in living things.

10.  Why are morphine, heroin, and other opiate drugs effective in fighting pain or giving people a euphoric feeling?

11.  Chemical bonds are created or destroyed in chemical _______________.

12.  In the following chemical shorthand, label the reactants and the products.

13.  What does the arrow mean?

14.  What does this kind of arrow mean?

15.  The reaction in #12 is photosynthesis.  Describe the reaction in words, using the formula as your guide.

16.  When a chemical reaction is reversible and continues back and forth in each direction until the number of reactions in one direction equal the number in the other direction, you 

have chemical _________________.

E. C. Name the most interesting thing from chapter 2.

E. C. Name one thing you remember, without notes, from chapter 1.