Science: Viruses Part 3

What does tRNA bring to the ribosome for Protein Synthesis?
(2)

What are the 2 steps of Protein Synthesis and what do they do?

Change in the nucelotide sequence of an organisms' DNA

What are the 2 types of Mutations?

Mutations:
One nucleotide is substituted for another

Mutations:
Changes entire sequence beyond mutant DNA code

What are the 3 types of Point Mutations?

-Point Mutation that does not result in a change to the amino acid sequence of a protein
-ex:
GAA=Glu 
GAG=Glu
(they still get the same amino acid)

-Point Mutation that results in a codon that codes for a different amino acid
-ex:
GAA=glu
GAC=asp
(their amino acids change)

-Point Mutation that results in a codon that codes for a "stop codon"
-ex:
UAU=Tyr
UAA=STOP

What are the 2 Frame-shift mutations?

Frame-shift Mutation that is an addition of one or more nucleotide base pairs into a DNA sequence (everything gets moved over)

Frame-shift mutation that is a a subtraction of one or more nucleotide base pairs from a DNA sequence

Which Frame-shift mutation is usually just a result of error in DNA replication?

What makes DNA unique?

What is the start codon?

Is it Translation or Transcription where A goes with U?