2. 5’
3’
This is a DNA molecule. On each side in this
example, there are 9 nucleotides. A
nucleotide is made up of a phosphate, a
sugar, and a base. The four examples of
bases are adenine, thymine, cytosine and
guanine. Adenine and thymine are always
paired and cytosine and guanine are paired.
To replicate, the hydrogen bond between
the bases much be split for each pair. DNA
replication occurs during the S stage of
mitosis in the nucleus.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
3’
5’
3. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
4. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
5. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
6. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
7. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
8. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
9. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
10. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
11. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
12. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
13. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Leading
Strand
Lagging
Strand
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
14. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
15. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
16. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
17. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
18. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
19. To replicate, the helicase unwinds of DNA
and the hydrogen bonds between the bases
are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
20. To replicate, the helicase unwinds of
DNA and the hydrogen bonds between
the bases are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
21. To replicate, the helicase
unwinds of DNA and the
hydrogen bonds between the
bases are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
22. To replicate, the helicase
unwinds of DNA and the
hydrogen bonds between
the bases are broken.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
23. First, on the leading strand, DNA
polymerase III adds the five
phosphate end of a free floating
nucleotide to the exposed 3’ OH
end on the single stranded DNA
continuously. This elongates
toward the replication fork. On the
lagging strand, DNA polymerase III
forms Okazaki fragments
discontinuously with the help of
other fragments. This elongates
away from the replication fork.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
24. First, on the leading strand, DNA
polymerase III adds the five
phosphate end of a free floating
nucleotide to the exposed 3’ OH
end on the single stranded DNA
continuously. This elongates
toward the replication fork. On the
lagging strand, DNA polymerase III
forms Okazaki fragments
discontinuously with the help of
other fragments. This elongates
away from the replication fork.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
25. First, on the leading strand, DNA
polymerase III adds the five
phosphate end of a free floating
nucleotide to the exposed 3’ OH
end on the single stranded DNA
continuously. This elongates
toward the replication fork. On the
lagging strand, DNA polymerase III
forms Okazaki fragments
discontinuously with the help of
other fragments. This elongates
away from the replication fork.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
26. First, on the leading strand, DNA
polymerase III adds the five
phosphate end of a free floating
nucleotide to the exposed 3’ OH
end on the single stranded DNA
continuously. This elongates
toward the replication fork. On the
lagging strand, DNA polymerase III
forms Okazaki fragments
discontinuously with the help of
other fragments. This elongates
away from the replication fork.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
27. First, on the leading strand, DNA
polymerase III adds the five
phosphate end of a free floating
nucleotide to the exposed 3’ OH
end on the single stranded DNA
continuously. This elongates
toward the replication fork. On the
lagging strand, DNA polymerase III
forms Okazaki fragments
discontinuously with the help of
other fragments. This elongates
away from the replication fork.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
28. First, on the leading strand, DNA
polymerase III adds the five
phosphate end of a free floating
nucleotide to the exposed 3’ OH
end on the single stranded DNA
continuously. This elongates
toward the replication fork. On the
lagging strand, DNA polymerase III
forms Okazaki fragments
discontinuously with the help of
other fragments. This elongates
away from the replication fork.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
29. First, on the leading strand, DNA
polymerase III adds the five
phosphate end of a free floating
nucleotide to the exposed 3’ OH
end on the single stranded DNA
continuously. This elongates
toward the replication fork. On the
lagging strand, DNA polymerase III
forms Okazaki fragments
discontinuously with the help of
other fragments. This elongates
away from the replication fork.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
30. First, on the leading strand, DNA
polymerase III adds the five
phosphate end of a free floating
nucleotide to the exposed 3’ OH
end on the single stranded DNA
continuously. This elongates
toward the replication fork. On the
lagging strand, DNA polymerase III
forms Okazaki fragments
discontinuously with the help of
other fragments. This elongates
away from the replication fork.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
31. First, on the leading strand, DNA
polymerase III adds the five
phosphate end of a free floating
nucleotide to the exposed 3’ OH
end on the single stranded DNA
continuously. This elongates
toward the replication fork. On the
lagging strand, DNA polymerase III
forms Okazaki fragments
discontinuously with the help of
other fragments. This elongates
away from the replication fork.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
32. First, on the leading strand, DNA
polymerase III adds the five
phosphate end of a free floating
nucleotide to the exposed 3’ OH
end on the single stranded DNA
continuously. This elongates
toward the replication fork. On the
lagging strand, DNA polymerase III
forms Okazaki fragments
discontinuously with the help of
other fragments. This elongates
away from the replication fork.
Key:
Okazaki
Fragments
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
33. 5’
3’
5’
3’
First, on the leading strand, DNA
polymerase III adds the five
phosphate end of a free floating
nucleotide to the exposed 3’ OH
end on the single stranded DNA
continuously. This elongates
toward the replication fork. On the
lagging strand, DNA polymerase III
forms Okazaki fragments
discontinuously with the help of
other fragments. This elongates
away from the replication fork.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
3’
5’
3’
5’
34. 5’
3’
5’
3’
DNA Primase creates an RNA
primer, which is then uses to
replicate DNA. DNA ligase “stitches
together” pieces of DNA to form a
longer strand.
Key:
- Adenine
- Guanine
- Thymine
- Phosphate
- Cytosine
- Sugar
- DNA Helicase
3’
5’
3’
5’
