4.4 Study Guide Flashcards
Translate this code to mRNA; ATCGA
UAGCU.
What starts a codon?
AUG.
What is a codon?
A triplet of RNA that codes for 1 amino acid.
What is a anticodon?
The reverse of tRNA.
What is a ribosome?
rRNA + proteins.
What is their roles in order?
Contains a message/code to make the amino acid, transfers amino acids and contains anti codons that pair with mRNA codons to put a.a., and facilitates matching of mRNA and tRNA in the correct order.
What are positive factors in gene regulation?
High PTF concentration, high PTF affinity, and high RNA polymerase.
What are negative factors in gene regulation?
High affinity with NTF and high concentration of NTF.
What is a mutation?
A change in DNA.
What are all the mutations?
Point, silent, missense, nonsense, frameshift, insertion, and deletion.
Where do they occur?
In DNA replication usually.
