DNA vs RNA
What is one difference between DNA & RNA?
RNA is single stranded.
RNA uses Uracil instead of Thymine
What mRNA bases would pair with this DNA strand (G-G-A-T-C-G-C-C-T-T-A-G-A-A-T-C)?
C-C-U-A-G-C-G-G-A-A-U-C-U-U-A-G
A codon is a sequence of how many bases?
3 bases
What tRNA anticodons would pair with this mRNA sequence: U-A-G-C-U-A-U-C-A-A-A-U
A-U-C-G-A-U-A-G-U-U-U-A
The mRNA leaves the ____________ and goes to the _______________.
Nucleus; cytoplasm
Is this molecule DNA or RNA:
GATTACA
DNA
Transcription (the first half of protein synthesis) creates what?
mRNA
Using a codon wheel what amino acid is UUG?
Leucine
Where does translation occur?
the cytoplasm (on a ribosome)
What would be the complementary MRNA strand to:
A-T-G-G-C-C
U-A-C-C-G-G
Transfer RNA
What do tRNA molecules carry to the mRNA strand
Amino Acids
What is located at each end of the tRNA molecule?
Anti-codon and amino acid
How many amino acids are there?
20
Which statements are correct:
A mutation in the DNA that changes the codon for different amino acid will likely:
A) Change the shape of the final protein
B) Change the amino acid sequence
C) Have no effect on the protein
A and B
What are 3 types of RNA?
mRNA, tRNA and rRNA
Where does transcription take place?
In the nucleus
What would the amino acids be in this strand of mRNA
AUG GCC UGG ACU UCA
Met(methionine), Ala(Alanine),Trp(Tryptophan), Thr(Theroline), Ser(Serine)
Where must an mRNA attach before a protein can be made?
mRNA must attach itself to a ribosome
What is the difference between a polypeptide and a protein?
Polypeptide is a string of amino acids but the protein is folded into a specific structure.
What is the role of DNA?
Store information
What are the two steps of protein synthesis called? Both start with T
Transcription and Translation
What is the start codon?
AUG
What type of bond is formed between amino acids?
Peptide bonds
What happens to the chain of Amnio Acids at the end of Protein synthesis
It folds up on its self to create a protein.