DNA Replication

Question 1

mutations

Answer 1

Can be caused by many different
factors, such as:
environmental conditions
viruses
inherited diseases
exposure to radiation
mistake in the DNA replication
process.

-Most mutations have no effect on the
organism
-They are vital to the process of evolution
-Most mutations come about in somatic cells (tissue cells) and cannot be passed on
-Polypoide when an organism has more than one set on its chromosome.

Question 2

replication enzymes and what they do
T
H
B
P
DP3
O
DP1
L

Answer 2

Topoismerase- relieves tension in the DNA
Helicase- seperates DNA strands (takes apart hydrogen bonds)
Binding Protein- prevent seperated DNA strands from rejoining
Primase- adds short primer to template strand
DNA polymerase 3- proofread the new DNA strand as it is made
Okazaki Fragments- complementary base pairs added in chunks
DNA polymerase 1- removes rna primer and inserts correct bases
Ligase- nicks or spaces in the DNA backbone are sealed up by

Question 3

banana lab

Answer 3

soap: it breaks apart the cellular and nuclear membrane and it releases the DNA
salt: its helps bring the DNA strands together
chilled alcohol: the alcohol is used t precipitate the DNA

Question 4

sequence & order of DNA replication

Answer 4

1. Topoismerase
2. Helicase
3. Binding Protein
4. Primase
5. DNA Poly 3
6. Okazaki Fragements
7. DNA poly 1
8. Ligase

Question 5

why we do replication?

Answer 5

to make new cells

Question 6

why won’t the body put additional DNA back into an old cell?

Answer 6

The cell is now gone and no longer has any DNA, if you don’t have DNA that you can replace then you can’t make more.

Question 7

structure and orientation

Answer 7

anti-parallel