The base pairing rule says that guanine always pairs with ________.
Cytosine
100
What are the 4 nitrogen bases?
Adenine, Thymine, Guanine, and Cytosine
100
What does DNA stand for?
Deoxyribonucleic acid
200
What kind of biomolecule is DNA?
nucleic acid
200
Which two molecules make up the sides of the DNA molecule?
sugar and phosphate
200
The base pairing rule says that thymine always pairs with _________.
Adenine
200
How many rings do purines have?
2
200
What bond connects nitrogenous bases together in the DNA molecule?
hydrogen bond
300
What are the building blocks of DNA?
nucleotide
300
What are three parts of nucleotide?
Sugar, phosphate, and nitrogenous base
300
What is the complementary strand to the following DNA base sequence?
A T C G T A
T A G C A T
300
How many rings do pyrimidines have?
1
300
How can DNA gel electrophoresis determine the real father of a child?
DNA gel electrophoresis cuts up DNA fragments from all possible fathers and the child and compares their bands. The DNA with that has the most matching bands with the child is the most likely father.
400
Who are two scientists won a Nobel Prize for discovering the structure of DNA?
Watson and Crick
400
True or False. Nitrogenous bases attach to phosphates not sugars. (If false, correct the sentence so that it is true.)
False. Nitrogenous bases attach to sugars, not phosphates.
400
What is the complementary strand to the following DNA base sequence?
C T A G A A C
G A T C T T G
400
Which nitrogen bases are purines (2 rings)?
Adenine (angels) and Guanine (God) are pure
400
Which of the following is NOT a step of DNA replication?
A)Enzyme helicase unwinding and unzipping DNA
B)DNA polymerase adding complementary bases to parent templates
C)DNA polymerase unwinding and unzipping DNA
D)2 new daughter DNA strands rewinding to form a double helix
C)
500
Chargaff's rule says that the amount A = T and the amount of G = C. If in a DNA molecule, there is 20% A (Adenine), what is the percentage of C (Cytosine)?
If A is 20%, then T is 20%.
A + T = 20% + 20% = 40%
100% - (A + T) = % of G + C
100% - 40% = 60% (G +C)
G = C
G = 60% / 2 = 30%
C = 60% /2 = 30%
500
What sugar is found in DNA?
Deoxyribose
500
Given the following DNA base sequence, finish drawing a complete DNA molecule, including all sugars (S), phosphates (P), and the complementary strand.
G
C
A
T
C
P P
SGCS
P P
SCGS
P P
SATS
P P
STAS
P P
SCGS
500
Which nitrogenous bases are pyrimidines (1 ring)?
Thymine (Tortillas) and Cytosine (Chips) are triangle/pyramid shaped.
500
DNA replication results in two new daughter DNA strands. Each new daughter DNA contains half of the parent DNA. This is described as: