Section 3-3: Gene Expression Flashcards
1
Q
RNA 3 components
A
sugar (ribose)
phosphate group
nitrogenous base
2
Q
4 components of nitrogenous base
A
purines: A + G
pyrimidines: Uracil (U) + C
3
Q
differences between RNA and DNA
A
single strand
very unstable
4
Q
transcription
A
DNA to RNA
5
Q
transcription starts from
A
promoter (DNA sequence)
6
Q
transcription catalyzed by
A
RNA polymerase (elongation form 5’ to 3’)
7
Q
transcription regulated by
A
transcription factor (protein)
8
Q
transcription uses (substrates)
A
ATP, UTP, GTP, CTP
9
Q
transcription product
A
messenger RNA (mRNA)
10
Q
translation
A
mRNA to protein
11
Q
translation start codon
A
AUG=Met
12
Q
translation catalyzed by
A
ribosome: makes peptide bonds
tRNA: reads codons
13
Q
translation uses (substrates)
A
20 amino acids
14
Q
translation product
A
protein
15
Q
translation occurs in
A
cytosol
rough ER
mitochondria
plastids
