Week 2: DNA and RNA Flashcards
1
Q
How does RNA differ from DNA? (4 pts)
A
- Less stable/ more chemically reactive
- More prone to mutate
- Single-stranded
- Can form 3D shapes and has catalytic functions
2
Q
What is mRNA?
A
Acts as a messenger to direct the production of proteins
3
Q
What is rRNA?
A
Forms part of the ribosome and catalyses protein synthesis
4
Q
What is tRNA?
A
Adaptor for protein synthesis between specific codon sequences
5
Q
What is sRNA?
A
Used in pre-mRNA processing and transport of proteins to the ER
6
Q
What is miRNA?
A
Regulation of gene expression
7
Q
How is mRNA processed before it leaves the nucleus?
A
- The 5’ end gets capped with an atypical nucleotide
- The 3’ end gets a tail of poly-A-nucleotides
