Science Quiz / Biology DNA terms

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The strand which is complementary to the template strand
Part of ribosome which travels along mRNA
The building blocks of proteins coded fro by DNA
Gene which slows cell division
When genetic code is read differently as a result of deletion and/or addition mutations
A replacement of one nucleotide with another
Result of the removal of introns from pre-mRNA
Clover leaf-shaped molecule with one end which a specific amino acid attaches
Sequence of 3 bases (triplet) on mRNA that code for a single amino acid
Sections of DNA that code for a polypetide
Process whereby free nucleotides bond to complementary bases on DNA strand forming pre-mRNA
Direction of RNA polymerase along DNA strand
Codes that do not code for any amino acid and mark the end of the polypeptide chain
A base change which results in different amino acid being coded for
Insertion of a base into the DNA sequence
Sections of DNA that do not code for a polypetide
A specific molecule that stimulates transcription
The 3 bases on the non-amino acid end of tRNA
Each base sequence is read only once
The removal of introns from pre-mRNA
Type of bonds that hold complementary bases together
Amino acids have more than one codon
When a nucelotide is lost from the DNA sequence
Same codons code for the same amino acid in all organisms (with few exceptions)
Process whereby polypeptide chain is formed by tRNA attaching to mRNA in cytpolasm
Part of ribosome where tRNA enters
Any change to the quantity or structure of the DNA
Small double-stranded sections of RNA essential for gene expressions
Organelle which is involved in translation
Gene which stimulates cell division
Outside factors which increase the rate of base mutations
A base change which results in a stop codon being produced
Name of chain of DNA on which RNA polymerase moves along
Enzyme breaking bonds between bases in DNA
Substituted base codes for same amino acid
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