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- Biology (BIO2010)
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Nucleic Acids and TranscriptionChapter 4 – Biology How Life Works (Morris et al.)
Reminders:
• Preparedness Quiz
• Due: Sept 16
• Do not leave completion to last minute!
Objectives:
• DNA Structure and Function – Review Activity
• The Central Dogma
• Comparison of RNA and DNA
• Transcription in Eukaryotes and Prokaryotes
• RNA Processing
BIOL1010 and 1
BIOL1011
, DNA to Protein
DNA stores genetic
information, which
encodes for proteins
Genetic information is
stored in genes
Genes are turned on (gene
expression) and cause an
effect Gene regulation
controls when this
process should occur
Protein
This Photo by Unknown Author
is licensed under CC BY-SA
2
BIOL1010 and
BIOL1011
, The Central Dogma
• The central dogma of molecular biology: DNA codes for
RNA and RNA codes for protein
DNA replication
Transcription Translation
Messenger RNA or mRNA Transfer RNA or tRNA
• Carries instructions for making • Links the code of mRNA and the code
polypeptides from DNA for specifying correct sequence of
• DNA serves as a template for amino acids in polypeptides
polypeptide synthesis • Information is translated from
• Information is copied (transcribed) “nucleotide language” to “amino acid
from DNA by mRNA language”
3
BIOL1010 and
BIOL1011
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