DNA Fact Check
Structure of the Spiral
Let's Make More
Bon-bonds
Picture Perfect
100
DNA is the abbreviation of what? (Spelling does not count.)
deoxyribonucleic acid
100
What are the four nitrogenous bases?
(A) adenine (T) thymine (G) guanine (C) cytosine
100
What direction does polymerase read DNA strands?
5' to 3'
100
Hydrogen bonds are described as __________.
weak
100
Watson and Crick were the first to describe DNA's structure as a __________ __________.
double helix
200
Arrange the following words in order from smallest to largest in structure: cell chromosome DNA nucleotide nucleus
nucleotide DNA chromosome nucleus cell
200
What is the term for one strand of DNA being "upside down" which makes it read backwards from the other strand?
antiparallel
200
The copying process of DNA molecules is classified as being __________. This means one original strand is kept and one new strand is made.
semi-conservative
200
Do hydrogen bonds need help forming?
no = they form on their own
200
A
phosphate group
300
A nucleotide is comprised of what three things?
phosphate group, deoxyribose sugar, nitrogenous base
300
Adenine (A) pairs with __________. Cytosine (C) pairs with __________.
(T) thymine (G) guanine
300
The enzyme that breaks the bonds between nitrogenous base pairs is called __________.
helicase
300
What bonds form between nitrogenous base pairs?
hydrogen bonds
300
B
deoxyribose sugar
400
The pairing of __________ __________ in DNA is the key feature that allows DNA to be copied.
nitrogenous bases
400
The side-rails of the DNA molecule are comprised of what two things?
phosphate group sugar
400
What enzyme places the correct nucleotides to the original strand?
polymerase
400
Bonds found between the phosphate group and the deoxyribose sugar are called __________ __________.
phosphodiester bonds
400
C
(C) cytosine
500
How does the DNA of a human differ from that of a squid?
nitrogenous bases are in different patterns
500
What is the name of the sugar that is found in DNA?
deoxyribose
500
Which of the enzymes forms the bonds between the deoxyribose sugar and the phosphate group of Okazaki fragments?
ligase
500
__________ bonds form between the deoxyribose sugar and the nitrogenous base.
glycosidic
500
D
(T) thymine
M
e
n
u