Bio 204 Chapter 3 DNA
1. In a double-stranded DNA molecule, the strands are said to be antiparallel
because:
a. they form an uneven pair of grooves on the outside of molecule.
b. each purine of one strand pairs with a pyrimidine of another.
c. they wind around one another.
d. one strand runs 5' to 3' and the other 3' to 5'.: d. one strand runs 5' to 3' and the other 3' to
5'.
2. Transcription is sometimes described as a process in which RNA is "copied"
from the template strand of DNA. This statement is potentially misleading
because
a. the RNA transcript and the DNA template strand are antiparallel.
,b. All of these choices are correct.
c. RNA molecules contain uracil instead of thymine
d. RNA nucleotides contain ribose and so cannot be an exact copy of DNA.
e. the RNA transcript has a complementary sequence of bases to the template
strand: e. the RNA transcript has a complementary sequence of bases to the template strand
3. What is the central dogma?
a. RNA is transcribed into protein, which is translated into DNA.
b. RNA is transcribed into DNA, which is translated into protein.
c. DNA is transcribed into protein, which is translated into RNA.
d. DNA is transcribed into RNA, which is translated into protein.: d. DNA is transcribed
into RNA, which is translated into protein.
, 4. Which type of protein does DNA wrap around so that it can be packaged in a
cell?
a. topoisomerase
b. histones
c. spliceosome proteins
1. In a double-stranded DNA molecule, the strands are said to be antiparallel
because:
a. they form an uneven pair of grooves on the outside of molecule.
b. each purine of one strand pairs with a pyrimidine of another.
c. they wind around one another.
d. one strand runs 5' to 3' and the other 3' to 5'.: d. one strand runs 5' to 3' and the other 3' to
5'.
2. Transcription is sometimes described as a process in which RNA is "copied"
from the template strand of DNA. This statement is potentially misleading
because
a. the RNA transcript and the DNA template strand are antiparallel.
,b. All of these choices are correct.
c. RNA molecules contain uracil instead of thymine
d. RNA nucleotides contain ribose and so cannot be an exact copy of DNA.
e. the RNA transcript has a complementary sequence of bases to the template
strand: e. the RNA transcript has a complementary sequence of bases to the template strand
3. What is the central dogma?
a. RNA is transcribed into protein, which is translated into DNA.
b. RNA is transcribed into DNA, which is translated into protein.
c. DNA is transcribed into protein, which is translated into RNA.
d. DNA is transcribed into RNA, which is translated into protein.: d. DNA is transcribed
into RNA, which is translated into protein.
, 4. Which type of protein does DNA wrap around so that it can be packaged in a
cell?
a. topoisomerase
b. histones
c. spliceosome proteins
