BiologyChapter 13: Chromosome and DNA
Replication (school) — Enzyme Names
Helicase, polymerase, ligase (joins fragments).
Learning objectives
- Define enzyme names using accurate biology terms.
- Explain why enzyme names matters within replication (school).
- Apply the learning unit to an FBISE-style example, comparison, diagram, or calculation.
Definition
Helicase, polymerase, ligase (joins fragments). No kit list, no temperatures as a protocol. PCR is a named lab idea in some books — word only. Helicase unwinds. Primase makes RNA primer. DNA polymerase adds nucleotides. Ligase joins Okazaki fragments. All names for exams — no PCR temperature protocol. This page separates the idea from the wider topic “REPLICATION (SCHOOL)” so it can be revised and assessed on its own.
Important terms
- ENZYME NAMES
- Helicase, polymerase, ligase (joins fragments).
- REPLICATION (SCHOOL)
- DNA copies before mitosis/meiosis (S phase).
Overview
Study this learning unit in three steps:
Key Idea
Helicase, polymerase, ligase (joins fragments). No kit list, no temperatures as a protocol. PCR is a named lab idea in some books — word only. Helicase unwinds. Primase makes RNA primer. DNA polymerase adds nucleotides. Ligase joins Okazaki fragments. All names for exams — no PCR temperature protocol.
Examples Leading vs lagging · Ligase seals · No PCR recipe
Exam Application
Exam semiconservative: Helix opens. Each strand templates a new strand. Each daughter DNA has one parental strand.
Examples Leading vs lagging · Ligase seals · No PCR recipe
WHAT — REPLICATION (SCHOOL) — ENZYME NAMES
Helicase, polymerase, ligase (joins fragments). No kit list, no temperatures as a protocol. PCR is a named lab idea in some books — word only. Helicase unwinds. Primase makes RNA primer. DNA polymerase adds nucleotides. Ligase joins Okazaki fragments. All names for exams — no PCR temperature protocol. This page separates the idea from the wider topic “REPLICATION (SCHOOL)” so it can be revised and assessed on its own.
WHY — Why this topic matters
REPLICATION (SCHOOL) — ENZYME NAMES is an independent FBISE learning unit because students must connect its structures and processes with their biological functions and examples.
HOW — How it works
Helicase, polymerase, ligase (joins fragments). No kit list, no temperatures as a protocol. PCR is a named lab idea in some books — word only. Helicase unwinds. Primase makes RNA primer. DNA polymerase adds nucleotides. Ligase joins Okazaki fragments. All names for exams — no PCR temperature protocol. Examples: Leading vs lagging; Ligase seals; No PCR recipe. Exam use: Exam semiconservative: Helix opens. Each strand templates a new strand. Each daughter DNA has one parental strand.
Explanation
Helicase, polymerase, ligase (joins fragments). No kit list, no temperatures as a protocol. PCR is a named lab idea in some books — word only. Helicase unwinds. Primase makes RNA primer. DNA polymerase adds nucleotides. Ligase joins Okazaki fragments. All names for exams — no PCR temperature protocol. Examples: Leading vs lagging; Ligase seals; No PCR recipe. Exam use: Exam semiconservative: Helix opens. Each strand templates a new strand. Each daughter DNA has one parental strand.
In simple words
Federal Board Class 11 Biology learning unit. Easy wording; no provincial-board material added.
Key points
- polymerase adds
- one old strand kept
Exam preparation
Exam Focus
Quick revision
Revision Zone
Review the key facts, formulas and checks before you move on.Replication (school) — Enzyme Names
Sticky Notes · Quick Revision
Core idea
- Helicase, polymerase, ligase (joins fragments). No kit list, no temperatures as a protocol. PCR is a named lab idea in some books — word only. Helicase unwinds. Primase makes RNA primer. DNA polymerase adds nucleotides. Ligase joins Okazaki fragments. All names for exams — no PCR temperature protocol. This page separates the idea from the wider topic “REPLICATION (SCHOOL)” so it can be revised and assessed on its own.
WHAT
- Helicase, polymerase, ligase (joins fragments).
WHY
- REPLICATION (SCHOOL) — ENZYME NAMES is an independent FBISE learning unit because students must connect its structures and processes with their biological functions and examples.
HOW
- Helicase, polymerase, ligase (joins fragments). No kit list, no temperatures as a protocol. PCR is a named lab idea in some books — word only. Helicase unwinds. Primase makes RNA primer. DNA polymerase adds nucleotides. Ligase joins Okazaki fragments. All names for exams — no PCR temperature protocol. Examples: Leading vs lagging; Ligase seals; No PCR recipe. Exam use: Exam semiconservative: Helix opens. Each strand templates a new strand. Each daughter DNA has one parental strand.
Common misconception
- Do not treat enzyme names as the same as every other part of replication (school); define this unit and use its own evidence, steps, or conditions.
FBISE exam check
- Define replication (school) — enzyme names, explain how it works, and support the answer with one relevant example.
60-second revision
- Helicase, polymerase, ligase (joins fragments).
- Leading vs lagging
- Exam link: polymerase adds.
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