DNA & RNA Interactive Simulation
Understanding the Building Blocks of Life š§¬
Welcome! Click on DNA or RNA buttons on the left to explore how genetic information is stored and used in your body.
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Get ready to discover how your body stores and uses information!
DNA - Deoxyribonucleic Acid
š The Instruction Book of Your Body
DNA stores all information about how your body is made and how it works (eye color, height, etc.)
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Double Helix Structure of DNA
Adenine (A)
Thymine (T)
Cytosine (C)
Guanine (G)
Sugar-Phosphate Backbone
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DNA Replication Process
Original DNA Strand
New DNA Strand
DNA Polymerase Enzyme
Nucleotides
DNA Structure Explained
š¬ Key Features:
- Double Helix Shape: Looks like a twisted ladder or spiral staircase
- Two Strands: Runs in opposite directions (antiparallel)
- Backbone: Made of sugar (deoxyribose) and phosphate molecules
- Four Bases: Adenine (A), Thymine (T), Cytosine (C), Guanine (G)
š” Base Pairing Rule:
Adenine (A) always pairs with Thymine (T)
Cytosine (C) always pairs with Guanine (G)
DNA Replication Process
š How It Works:
- Unwinding: Helicase enzyme unwinds and separates the two DNA strands
- Template Strands: Each original strand serves as a template
- DNA Polymerase: Enzyme that builds new complementary strands
- Base Pairing: New nucleotides match with template bases (A-T, C-G)
- Two Identical Copies: Results in two identical DNA molecules
šÆ Key Concept:
Semi-Conservative Replication - Each new DNA molecule contains one original strand and one new strand
RNA - Ribonucleic Acid
š The Helper That Uses DNA's Instructions
RNA helps in making proteins using the information from DNA
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Single Strand Structure of RNA
Adenine (A)
Uracil (U)
Cytosine (C)
Guanine (G)
Sugar-Phosphate Backbone
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DNA to RNA Transcription Process
DNA Template
RNA Strand
RNA Polymerase
Nucleotides
RNA Structure Explained
š¬ Key Differences from DNA:
- Single Stranded: Usually exists as a single strand (not double)
- Different Sugar: Uses ribose sugar instead of deoxyribose
- Uracil Instead of Thymine: Contains Uracil (U) where DNA has Thymine (T)
- More Flexible: Can fold into complex 3D shapes
- Shorter: Typically much shorter than DNA molecules
šÆ Base Pairing in RNA:
Adenine (A) pairs with Uracil (U)
Cytosine (C) still pairs with Guanine (G)
Transcription Process
š DNA to RNA Conversion:
- Initiation: RNA polymerase binds to DNA at specific start points
- Unwinding: DNA helix unwinds to expose the template strand
- Elongation: RNA polymerase builds RNA strand using DNA as template
- Base Pairing: A (DNA) ā U (RNA), T (DNA) ā A (RNA), CāG same
- Termination: Process stops at specific termination signals
š¤ Three Types of RNA:
mRNA (messenger) - Carries genetic code
tRNA (transfer) - Brings amino acids
rRNA (ribosomal) - Builds protein machinery
tRNA (transfer) - Brings amino acids
rRNA (ribosomal) - Builds protein machinery
š§¬ DNA & RNA Quiz
Test your knowledge about genetic molecules! Answer correctly to proceed to the next question.