DNA as genetic material

Question 1

Nucleotides

Answer 1

1. phosphate group
2. 5C sugar
3. nitrogenous base
   - adenine (double ring)
   - guanine (double ring)
   - thymine (single)
   - cytosine (single)

Question 2

gene, genome, chromosome and ploidy

Answer 2

1. section of DNA that makes RNA or protein
2. collection of DNA
3. seperate pieces of DNA that contain genes
4. # of copies of each chromosomes an organism has

Question 3

DNA replication enzymes

Answer 3

topoisomerase- uncoils DNA helix
helicase- seperates strands
primase- makes RNA primer
DNA ploymerase- extends dna strand
ligase - joins fragments together

Question 4

leading vs. lagging

Answer 4

leading –> leading into replication fork, goes with the direction of topoisomerase and helicase
lagging —>built anti parallel- opposite direction- and built in okazaki fragments