BIO 105 EXAM 4 COMPREHENSIVE PLANT AND
ANIMAL PHYSIOLOGY STUDY GUIDE 2026
◉ During DNA replication, an open section of DNA, in which a DNA
polymerase can replicate DNA, is called a.
Answer: replication fork
◉ _____ are the short sections of DNA that are synthesized on the
lagging strand of the replicating DNA..
Answer: Okazaki fragments
◉ The new DNA strand that grows continuously in the 5' to 3'
direction is called the.
Answer: leading strand
◉ After replication is complete, the new DNAs, called _______ , are
identical to each othe.
Answer: daughter DNA
◉ Which of the following hypothetical changes would eliminate the
need to synthesize a lagging strand?.
Answer: allowing DNA synthesis to occur in both the 5' to 3' and 3'
to 5' directions
,◉ T or F: Longer stretches of single-stranded DNA are expected on
the lagging strand template than on the leading strand template..
Answer: true
◉ T or F: The rate of DNA synthesis from each primer is expected to
be faster on the leading strand than on the lagging strand..
Answer: false
◉ T or F: The template DNA for the leading strand is easier to
unwind than the template DNA for the lagging strand..
Answer: false
◉ T or F : More primers are expected to be used in the synthesis of
the lagging strand than in the synthesis of the leading strand.
Answer: true
◉ In the polymerization of DNA, a phosphodiester bond is formed
between a phosphate group of the nucleotide being added and _____
of the last nucleotide in the polymer..
1. a nitrogen from the nitrogen-containing base
2. the 5' phosphate
, 3. C6
4, the 3' OH.
Answer: the 3' OH
◉ In an analysis of the nucleotide composition of DNA, which of the
following will be found?
1. A + C = G + T
2. G + C = T + A
3. A = G
4. C = TA = C.
Answer: A + C =. G + T
◉ All of the following are true about the structure of
deoxyribonucleic acid except __________.
1. a single nucleotide has a phosphate group, pentose sugar, and
nitrogenous base. The primary structure of DNA consists of
nitrogenous bases sticking out from the backbone
2. nucleotides consist of a phosphate group, pentose sugar, and
nitrogenous base. The primary structure of DNA has a sugar-
phosphate backbone
3. phosphodiester bonds connect deoxyribonucelotides in the
primary structure of DNA
ANIMAL PHYSIOLOGY STUDY GUIDE 2026
◉ During DNA replication, an open section of DNA, in which a DNA
polymerase can replicate DNA, is called a.
Answer: replication fork
◉ _____ are the short sections of DNA that are synthesized on the
lagging strand of the replicating DNA..
Answer: Okazaki fragments
◉ The new DNA strand that grows continuously in the 5' to 3'
direction is called the.
Answer: leading strand
◉ After replication is complete, the new DNAs, called _______ , are
identical to each othe.
Answer: daughter DNA
◉ Which of the following hypothetical changes would eliminate the
need to synthesize a lagging strand?.
Answer: allowing DNA synthesis to occur in both the 5' to 3' and 3'
to 5' directions
,◉ T or F: Longer stretches of single-stranded DNA are expected on
the lagging strand template than on the leading strand template..
Answer: true
◉ T or F: The rate of DNA synthesis from each primer is expected to
be faster on the leading strand than on the lagging strand..
Answer: false
◉ T or F: The template DNA for the leading strand is easier to
unwind than the template DNA for the lagging strand..
Answer: false
◉ T or F : More primers are expected to be used in the synthesis of
the lagging strand than in the synthesis of the leading strand.
Answer: true
◉ In the polymerization of DNA, a phosphodiester bond is formed
between a phosphate group of the nucleotide being added and _____
of the last nucleotide in the polymer..
1. a nitrogen from the nitrogen-containing base
2. the 5' phosphate
, 3. C6
4, the 3' OH.
Answer: the 3' OH
◉ In an analysis of the nucleotide composition of DNA, which of the
following will be found?
1. A + C = G + T
2. G + C = T + A
3. A = G
4. C = TA = C.
Answer: A + C =. G + T
◉ All of the following are true about the structure of
deoxyribonucleic acid except __________.
1. a single nucleotide has a phosphate group, pentose sugar, and
nitrogenous base. The primary structure of DNA consists of
nitrogenous bases sticking out from the backbone
2. nucleotides consist of a phosphate group, pentose sugar, and
nitrogenous base. The primary structure of DNA has a sugar-
phosphate backbone
3. phosphodiester bonds connect deoxyribonucelotides in the
primary structure of DNA
