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Flashcards in biological molecules - DNA replication Deck (10)
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1

What is the genetic code?

each amino acid has more than one triplet code

2

what is the triplet code?

a sequence of 3 bases called a codon and each codon codes for amino acids

3

what enzyme breaks down the hydrogen bonds in DNA?

DNA helicase

4

what is the process of semi conservative replication?

1 - DNA helicase breaks down the hydrogen bonds separating the 2 strands
2 - free nucleotides are then activated
3 - the free activated nucleotides line up and join together by DNA polymerase creating a polynucleotide chain
4 - 2 identical molecules of DNA are formed
5 - each new molecule of DNA are composed of one original strand and one newly formed DNA

5

What enzyme forms bonds between free nucleotides?

DNA polymerase

6

what is the genetic code?

DNA codes for a sequence of amino acids

7

where does transcription take place?

the nucleus

8

what is the role of tRNA?

to transfer amino acids into the ribosome

9

what is a codon?

a group of 3 bases on mRNA strand

10

where is the precise site of protein synthesis?

the ribosomes