DNA Replication Flashcards

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1
Q

mutations

A
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.

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2
Q
replication enzymes and what they do
T
H
B
P
DP3
O
DP1
L
A

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

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3
Q

banana lab

A

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

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4
Q

sequence & order of DNA replication

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

why we do replication?

A

to make new cells

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6
Q

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

A

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.

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7
Q

structure and orientation

A

anti-parallel

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