W1 DNA + RNA + Proteins Flashcards
1
Q
what is the function of ribosomal RNA
A
- transfers AA from charged tRNA to peptide polymer
2
Q
what is the RNA world hypothesis
A
- RNA was self replicating
- catalytic and storage functioms
3
Q
what are viroids
A
circular ssRNA which infect plants
4
Q
what shape is tRNA described as
A
clover shaped
5
Q
what is the acceptor stem of a tRNA
A
charged with complementary AA
6
Q
Describe the steps on how RNA regulate gene expression
A
- double stranded RNA detected by argonaute proteins
- cut into 21 nucleotide ssRNA’s
- protein finds complementary seq to 21 nucleotides to stop translation of more proteins
7
Q
why are lipid nano particles used for drug administration
A
to get through lipid cell membrane
8
Q
why is mRNA modified
A
avoid inflammatory responses
- increased protein production
9
Q
what are purine bases
A
A and G
10
Q
what are pyrimidine bases
A
C and T
11
Q
why is RNA degraded more easily than DNA
A
due to the 2’ OH group in RNA
12
Q
what can non coding RNA do
A
become catalyst
