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Chapter 5

PBSC DNA & GENE EXPRESSION - Part 2 BSC1005 259323 CONCEPTS IN BIOLOGY

QuestionAnswer
The name of the base triplets found on the tRNA molecule which bind with a codon are ______. anti codons
During translation when amino acids are continually being added to the growing polypeptide chain, it is called _____. Elongation
The region of the DNA which binds RNA polymerase is known as the _____. Promoter
What two codons code for the amino acid phenylalanine? (Use the table in your notes/book.) UUU, UUC
Base triplets found on the messenger RNA are called _____. codons
Another name for the Repressor Protein in the LAC operon is the ______ Protein. Regulatory
When translation begins it is called _____. Initiation
A _____ mutation results in the formation of a STOP codon. Nonsense
Sickle cell anemia is a diseae caused by a type of ______ mutation. Missense
The name of the enzyme which is capable of producing RNA. RNA Polymerase
The 3 parts of an operon are the: promoter, _____ and the genes regulated by the operon itself. operator
A _____ mutation occurs when the change in the genetic code results in a different amino acid being inserted into the protein chain. Missense
UAA codes for a _____ codon. (Use the table in your notes/book.) STOP
Is transcription increased or decreased in the promoter level control wherein there is a strong promoter/polymerase bond? increased
In the LAC operon, the regulatory protein binds to the ______ when lactose is ______ (present or absent?) Operator; absent
What is another name for a point mutation? Base Substitution
When a stop codon is reached during translation, the stage of _____ has been reached. Termination
What amino acid does: GCA code for? (Use the table in your notes/book.) Alanine
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