Cell division

Question 1

What is a codon?

Answer 1

three-base section of DNA

Question 2

What do codons do?

Answer 2

each represent a particular amino acid in a protein sequence

Question 3

What is needed for an organsims to function properly?

Answer 3

DNA must be copied correctly

Question 4

How can DNA chains be broken?

Answer 4

hydrogen bonds are 10x weaker than covalent so that hydrogen bonds can be broken without breaking the back bone

Question 5

What is done in cell division?

Answer 5

• hydrogen bonds of the DNA double helix break and the strands unravel
• the cell contrains a mixture of separate nucleotide molecules
• these move in and pair up with the newcly-exposed bases
• this results in two double helix molecule, each exactly the same as the original one
• this is replication

Question 6

How is the information used?

Answer 6

• the information in DNA molecules is used to make proteins
• these are the basis of living things
• form structural material
• and enzymes that control the reaction by which other parts of the organism are made