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97' SBIOA Exam

 

93 Exam 
Part A: M/C
Part B: Short Answers
Part C: Essay Question

94 Exam 
Part A: M/C
Part B: Essay Questions

95 Exam 
Part A: M/C
Part B:
Part C:
Part D:

97 Exam 
Part A: M/C
Part B:
Part C:
Part D:
  
  

 

PART D: Each is worth 20.  I will stop each answer after reading after about 200 words (or about 2/3 rd’s of a fullscap paper.  (Did you know it’s actually called foolscap?)  Estimated time:  30 minutes.

 

1.                  If life in the broadest sense were to be considered more important than any one single organism’s life, which in general are more important: plants or animals?

 

2.                  Respond to the Letter to the Editor, “Trees not needed.”  Cite specific instances in this semester’s classes with relate most directly to this siutation.

 

3.                  In mechanistic terms, life is just  DNA creating molecules which in turn move electrons around.  Somewhere in there, we exist. From a mechanistic viewpoint, discuss the validity of this claim. 

 


Supplied Tables and Figures:     Periodic Table, Structures of Amino Acids (p. 31) , Overview of Interconnection of Biochemical Pathways p 121), Genetic Code

 

Typical Free Energies of Bonds

TYPE OF BOND

BOND ENERGY (kJ)

C-H

410

O-H

460

C-C

330

C-O

320

H-H

430

C-N

270

O=O

480

C=O*

780

C=C

600

 

* as found in CO2

 

Table of Free Energies of Reactions

Reaction

D G (kJ/mol)

ATP ± ADP + Pi

- 31

NADH/H+ ±  NAD+ + H2

- 220

FADH2 ±  FAD + H2

- 180

NADPH/H+ ± NADP + H2

+ 180

  

  <-Part C   ---  The End of 97 Exam ---   Study Notes->