Molecular Biology
& Biochemistry - Biol 99
Homework
3 - 5
due: various
dates
These may be emailed or handed in by class time as hard copies.
If you email, you may hand in sketches & diagrams as hard copies.
# 3. due
5/4/10
Explain the "note" below Table 16-1 (p. 444-45 (in 6th edition).
If glycolysis can
only proceed if all the dG values <0, how do we use
glucose? What does the comment about not knowing the
concentrations of metabolites in vivo mean, and how is this related
to dG >0?
# 4. due
5/6/10 Refer to Chapter 18 in your
textbook. In your own words, supplemented with diagrams if you
choose, explain:
a. the purpose of oxidative phosphorylation
b. what a redox potential is
c. why the molecules
listed in Table 18-2 are good "electron carriers" - this must include
a
brief explanation of what an "electron carrier" is
# 5. due
5/11/10 Refer to Chapter 22 in your textbook.
In your own words, supplemented with diagrams if you choose, explain:
a. what is a neutral lipid; what saturated and
unsaturated mean in this context
b. from what might a fatty acid be
synthesized (idenitfy the pathways); how many ATP equivalents are
used
to generate 6 C of a fatty acid chain?
c. into what is a fatty acid is
degraded (identify the pathways); how many ATP equivalents are
generated per 6 C of fatty acid chain?
d. Is fat a more efficient
biomolecule for energy storage than carbohydrates or proteins?
Explain; support your argument.