ch 39 Flashcards
(13 cards)
Whats the Central Dogma again?
DNA whispers to RNA (transcription), and RNA spills the tea into protein (translation).
Whats the starting line for protein synthesis?
The start codon AUG it brings in methionine, the Beyonc of amino acids
Why are there 3 stop codons but only 1 start?
Because its easy to end a relationship but hard to start the right one.
Whats a codon?
A 3-letter mRNA word that tells which amino acid to add next it’s genetic texting.
What is codon degeneracy?
Multiple codons can code for the same amino acid because options are hot.
Whats the wobble in tRNA all about?
The third base in a codon flirts with multiple anticodons a little loose, but efficient.
How do amino acids get attached to tRNA?
By aminoacyl-tRNA synthetase the matchmaker enzyme that uses ATP to lock in love.
What shape does tRNA take on?
A cloverleaf in 2D, but a sexy L-shape in 3D like a molecular model walking the runway.
Whats aminoacyl-AMP?
The high-energy fling before tRNA gets officially charged with its amino acid.
Who actually builds the protein?
The ribosome the ultimate rRNA-based diva, catalyzing every peptide bond.
How does translation begin?
mRNA meets ribosome, AUG gets matched with tRNA-Met, and the chain begins.
How does translation end?
A stop codon enters, no tRNA can handle it, and the ribosome breaks up the party
