What happens in the G1 phase?
The cell grows
What are the four nitrogen bases of DNA and which ones pairs together?
A pairs with T
C pairs with G
List the nitrogen bases used in RNA
A U C G

mRNA codon chart of 64 codons and 20 amino acids
What is the biggest difference between prokaryotes and eukaryotes?
lack of a nucleus
What does cell division allow an organism to do?
grow and develop and repair tissues
List the four enzymes of replication.
Helicase
Primase
Polymerase
Ligase
What is the mRNA sequence of this DNA sequence?
ATC GUA TTA
UAG CAU AAU
Determine the amino acid sequence resulting from this mRNA segment
AUG CGC
Start Arginine
Uncontrolled cell division results in this.
Cancer
What is the product of cell division?
Two identical daughter cells
What phase of the cell cycle does replication occur in?
Synthesis phase
What does a START codon signal?
mRNA is to start copying DNA in that location
What is the amino acid sequence that results from this mRNA sequence
GCG UAA
alanine STOP
What is the only part of a DNA strand that can change?
the nitrogen bases
What phase of the cell cycle prepares a cell to divide?
G2
What is the product of DNA replication?
two identical DNA strands
What does DNA Helicase break to separate DNA strands apart for transcription?
weak hydrogen bonds
How many ways are there to code for Threonine?
four
Why is DNA considered to be a universal code
all living organisms contain similar DNA
What does a cell look like if it is in metaphase?
the chromosomes are lined up in the middle of the cell
What makes up the sides of a DNA strand?
Phosphate and sugar molecules
The nucleus
Where transcription takes place
What is the purpose of tRNA?
it shows the sequence of the amino acids
temperature and diet
two factors that can influence what genes are activated