final Flashcards
(7 cards)
1
Q
RNA splicing: What is it and why important
A
- Removes noncoding introns from pre-mRNA
- facilitates export of mRNA to cytoplasm
- allows for multiple proteins to be produced through alternative splicing
2
Q
what are the differences between tRNA, mRNA and rRNA
A
- Rna is transcribed by rna pol I in nucleus
- mrna is transcribed by rna pol II
- tRNA is transcribed by RNA pol III
3
Q
How do amino acids bind to tRNA
A
enzyme called aminoacyl-tRNA sythetase
4
Q
how is a growing peptide chain made?
A
amino acids are linked by peptide bonds to form polypeptide chains
5
Q
Direction of synthesis
A
- synthesis goes from right to left
- the other template goes in the opposite direction
6
Q
what is the study of phylogenetics
A
study of evolutionary history and relationships among individuals or groups of organisms
7
Q
why is phylogetics important
A
it helps us understand how genes, genomes and species evolve
