Biology HL
4
Chapters
553
Notes
Theme A - Unity & diversity
Theme B - Form & Function
Theme C - Interaction & Interdependence
Theme D - Continuity & Change
Biology HL
Theme D - Continuity & Change
Key Roles of DNA Enzymes in Replication Explained
383 words
2 mins read
Last edited on 5th Nov 2024
Table of content
Meet the Band Members 🎤
- DNA Primase: The Rockstar who starts the show
- DNA Polymerase III: The main performer who keeps the rhythm going
- DNA Polymerase I: The versatile artist who corrects any off-tunes
- DNA Ligase: The technician who ensures the whole performance is seamlessly connected
DNA Primase - "Starting the DNA Jam! 🎸
- Type? RNA polymerase.
- Role? Sets the stage for DNA replication.
- How? Creates an RNA primer (~10 RNA nucleotides) on the template DNA strand.
- 🌍 Real-world Example: Imagine you're painting a mural. The RNA primer is like the initial sketch which guides where the rest of the paints (nucleotides) will go.
- Frequency? On the leading strand: only once; on the lagging strand: every 100-200 nucleotides.
DNA Polymerase III - The Main Show! 🎶
- Role? Assembles DNA nucleotides complementary to the template strand.
- Direction? Adds nucleotides from 5′ to 3′ direction.
- Where? Binds to the 3' side of an RNA primer.
- Special Feature? Proofreads each nucleotide it adds.
- 🌍 Real-world Example: It's like a musician listening to each note they play, making sure it sounds right.
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Biology HL
Theme D - Continuity & Change
Key Roles of DNA Enzymes in Replication Explained
383 words
2 mins read
Last edited on 5th Nov 2024
Table of content
Meet the Band Members 🎤
- DNA Primase: The Rockstar who starts the show
- DNA Polymerase III: The main performer who keeps the rhythm going
- DNA Polymerase I: The versatile artist who corrects any off-tunes
- DNA Ligase: The technician who ensures the whole performance is seamlessly connected
DNA Primase - "Starting the DNA Jam! 🎸
- Type? RNA polymerase.
- Role? Sets the stage for DNA replication.
- How? Creates an RNA primer (~10 RNA nucleotides) on the template DNA strand.
- 🌍 Real-world Example: Imagine you're painting a mural. The RNA primer is like the initial sketch which guides where the rest of the paints (nucleotides) will go.
- Frequency? On the leading strand: only once; on the lagging strand: every 100-200 nucleotides.
DNA Polymerase III - The Main Show! 🎶
- Role? Assembles DNA nucleotides complementary to the template strand.
- Direction? Adds nucleotides from 5′ to 3′ direction.
- Where? Binds to the 3' side of an RNA primer.
- Special Feature? Proofreads each nucleotide it adds.
- 🌍 Real-world Example: It's like a musician listening to each note they play, making sure it sounds right.
Unlock the Full Content!
Dive deeper and gain exclusive access to premium files of Biology HL. Subscribe now and get closer to that 45 🌟