energy and
power of signals.
(a) Plot
the signal x(t)
=
e−tu(t)
and determine its energy. What is the power of x(t)?
(b) How
does the energy of z(t)
=
e−∣t∣,
−∞
<
t
<
∞, compare to the energy
of z1(t)
=
e−tu(t)?
Carefully plot the two signals.
(c) Consider the
signaly(t)
=
sign[xi(t)]
=
1
xi(t)
≥
0
−1
xi(t)
< 0
for
−∞
<
t
<
∞,i
=
1,2. Find the
energy and the power of...
Use the concept of free-energy and the term
electronegativity to explain why facultative anaerobes grow faster
under aerobic conditions than anaerobic conditions.
1. Dark Energy
(a) Why is dark energy "dark"? Why is it "energy"?
(b) Give at least one way that dark energy is different from
dark matter. Also give at least one way that dark energy is similar
to dark matter.
(c) What is the difference between the cosmological constant and
dark energy?
Post-translational modification
Protein targeting to ER & elsewhere; signal peptide &
signal recognition particle. Why are some proteins targeted to the
ER? Compare secreted proteins to integral membrane proteins.
Free vs. bound ribosomes
How is the control of gene expression different in prokaryotes
& eukaryotes?
Energy Console is a new alternative energy company that is
expected to experience short-term supernormal dividend growth rates
of 50% in year 1, 40% in year 2 and 25% in year 3. After 3 years of
supernormal growth, this company dividend is expected to grow at a
constant rate of 5%. However, today due to the volatility in the
technology stocks, analysts have made downward projection on its
short-term growth rates to 15% in year 1, 10% in year 2...