slide 1 transcription dnarna translation protein in-text figure page 227
DESCRIPTION
Slide 3 DNA RNAG C A T C G T A G C A U C G T A base-pairing in DNA replicationbase-pairing in transcription Figure 14.3 Page 228TRANSCRIPT
Slide 1
transcriptionDNA RNA
translationprotein
In-text figurePage 227
Slide 2
URACIL (U)base with a single-ring structure
phosphate group
sugar (ribose)
Figure 14.2Page 228
Slide 3
DNA
DNA DNA
RNAG C A T
C G T A
G C A U
C G T A
base-pairing in DNA replication base-pairing in transcription
Figure 14.3Page 228
Slide 4
sugar-phosphate backbone of one strand of nucleoides in a DNA double helix
sugar-phosphate backbone of the other strand of nucleoides
part of the sequence of base-pairs (blue)
Figure 14.4aPage 228
Slide 5
RNA polymerase
DNA
Figure 14.4bPage 229
Slide 6
transcribed DNA winds up again DNA to be transcribed unwinds
newly forming RNA transcript
DNA template at the assembly site
Figure 14.4cPage 229
Slide 7
3’5’
growing RNA transcript
5’
3’ 5’
3’
direction of transcription
Figure 14.4d,ePage 229
Slide 8
mature mRNA transcript
5’ 3’
3’
poly-A tail5’
snipped out snipped out
cap
transcription into pre-mRNA
unit of transcription in a DNA strand
exon intron exon exonintron3’ 5’
Stepped ArtFigure 14.5Page 229
Slide 9
arginine glycine tyrosine tyrosinetryptophan
base sequence of gene region
mRNA
amino acids
Figure 14.6Page 230
Slide 10
Figure 14.7Page 230
Slide 11
codon in mRNA
anticodon
amino acid OH
amino-acidattachment site
Figure 14.8Page 231
Slide 12
small ribosome subunit large ribosome subunit
tunnel
intact ribosome+
Figure 14.9b,cPage 231
Slide 13
mRNA transcript
intact ribosome
Initiation
initiator tRNAsmall ribosomal subunit
Fig. 14.10a-cPage 232
Slide 14
binding site for mRNA
P (first binding site for tRNA)
A (second binding site for tRNA)
platform on small ribosomal subunit
Figure 14.10dPage 232
Slide 15
Elongation
Fig. 14.10e-gPage 233
Slide 16
Elongation
Fig. 14.10h,iPage 233
Slide 17
Termination
mRNA
new polypeptide chain
mRNA
Fig. 14.10j-kPage 233
Slide 18
original base triplet in a DNA strand
During replication, proofreading enzymes make a substitution:
a base substitution within the triplet (red)
original, unmutated sequence
a gene mutation
possible outcomes:
or
Figure 14.11Page 234
Slide 19
mRNA parental DNA amino acids
altered mRNADNA withbase insertionaltered amino-acid sequence
arginine glycine tyrosine tryptophan asparagine
arginine glycine leucine glutamateleucine
Figure 14.12Page 234
Slide 20
mRNA rRNA tRNA
Translation
amino acids, tRNAs, ribosomal subunits
mRNA transcripts
protein subunits
ribosomal subunits
tRNA
Transcription
Protein Figure 14.14Page 236