1
Why is the addition of RNA primers necessary during DNA replication?
To form a “dock” for DNA polymerase to attach
What holds the bases together to form the double helix?
hydrogen bonds
Why did Rosalind Franklin NOT win the Nobel Prize along with Wilkins, Watson, and Crick?
she had died
The Nitrogenous Base A is
adenine
thymine
What are the short fragments called that are made on the lagging strand?
Okazaki fragments
The strand of DNA that is made continuously in one piece is called the
leading strand
The rungs of the DNA “ladder” are made of
nitrogenous bases
Today we know that DNA is the genetic material for:
all living things
The nitrogenous base that pairs with cytosine is
guanine
What enzyme adds nucleotides to the new strands of DNA?
DNA Polymerase
The extraction buffer was used in the strawberry DNA lab because the DNA in eukaryotes must be removed from the
nucleus
What is the process of copying DNA called?
replication
Prokaryotic cells have __________, ___________ chromosomes.
single, circular
What is a bacteriophage?
A virus that infects bacteria.
DNA replication results in two DNA molecules, each with one ___ strand and one _____ strand.
new, old (original)
The monomers (building blocks) of DNA are called
nucleotides.
During which phase of the cell cycle does replication take place?
S-Phase
In prokaryotic cells, where is the DNA typically located?
cytoplasm
If a DNA strand has the following bases, what would its complement be?
TCG ACC GCT
Because of base pairing in DNA, the percentage of thymine molecules in DNA is ________ to the percentage of adenine molecules
equal
The sides of the DNA “ladder” are made of
phosphates and deoxyribose.
Which enzyme is responsible for unwinding the DNA to create the replication fork?
helicase
In DNA replication, which direction does DNA polymerase add complementary nucleotides on the leading strand?
5’ to 3’
What happened when Griffith injected mice with a mixture of live harmless R type bacteria and heat-killed S type bacteria?
The mice developed pneumonia