Chapter 16 - Lipids and Nucleic Acids
Practice Exercises
(Taken from last year's exam)
The informational strand of a DNA contains the base sequence shown below
(written in the standard 5' to 3' direction).
C G T T A C C T A C A A G C C T G T
a) Indicate the base sequence that would match this in its complementary
strand
b) Indicate the base sequence in the m-RNA that would be transcribed
c) When the message is translated into peptide synthesis, describe each
of the tRNAs that would be called for, in terms of their anticodons and
the aminoacids they would bring in
d) There are 6 C bases in the original DNA sequence written above. Number
them 1 to 6. A mutation of C to T would cause drastic changes in just two
cases, a minor change in one case, and have no effect in three cases. Indicate
by number which C bases would cause these effects.