biological molecules - DNA replication

Question 1

What is the genetic code?

Answer 1

each amino acid has more than one triplet code

Question 2

what is the triplet code?

Answer 2

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

Question 3

what enzyme breaks down the hydrogen bonds in DNA?

Answer 3

DNA helicase

Question 4

what is the process of semi conservative replication?

Answer 4

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

Question 5

What enzyme forms bonds between free nucleotides?

Answer 5

DNA polymerase

Question 6

what is the genetic code?

Answer 6

DNA codes for a sequence of amino acids

Question 7

where does transcription take place?

Answer 7

the nucleus

Question 8

what is the role of tRNA?

Answer 8

to transfer amino acids into the ribosome

Question 9

what is a codon?

Answer 9

a group of 3 bases on mRNA strand

Question 10

where is the precise site of protein synthesis?

Answer 10

the ribosomes