Topic 6 - The Structure Of DNA And Protein Synthesis

Question 1

DNA strands are polymers made up of lots of monomers called nucleotides, what are these made up of?

Answer 1

One sugar molecule, one phosphate molecule and one base

Question 2

How do nucleotides form DNA?

Answer 2

The sugar and phosphate molecules in the nuclear tides from a backbone to the DNA. They alternate and one of four different bases joins to each sugar. Each base links to a base on the opposite strand of the helix through complimentary base pairing

Question 3

What are the four bases and how today’s one together

Answer 3

A, T, C, G > A to T C to G

Question 4

What do the parts of DNA that don’t code for proteins do?

Answer 4

They switch genes on or off so control weather or not a gene is expressed

Question 5

How do genes decide proteins formed?

Answer 5

The order if bases is how genes decide the order of amino acids in a protein, each amino acid is coded by a sequence of 3 bases

Question 6

How do ribosomes form proteins?

Answer 6

1) mRNA copies code from DNA and acts as a messenger between DNA and ribosomes, carrying code between the two
2) The correct amino acids are brought to the ribosomes by carroer molecules