DNA
After DNA Replication, the two DNA molecules that are made are
Identical
Which Nitrogen base does DNA have but RNA does have
Uracil
How did Roseland Franklin contribute to the finding of DNA
Produced the X ray pattern
What is the final out come of Protein Synthesis
Protein
DNA Replication:
TTA CAG GGC
AAT GTC CCG
The two stands of DNA are __________
Antiparallel
What is a codon
A combination of 3 Nitrogen bases on mRNA
Name 4 differences between DNA and RNA
RNA DNA
Uracil Thymine
Ribose Deoxyribose
Single strand Double strand
Transfers genetic info stores genetic info
List the steps of protein synthesis in order and where each step occurs
Transcription - Nucleus
Translation - Cytoplasm/Ribosome
Transcribe the DNA to mRNA
DNA: TTA CCG ATG
mRNA:
AAU GGC UAC
Why is DNA replication considered semi-conservative
The 2 DNA molecules that result in replication contain one new strand and one original strand
Each Codon specifies a specific _____________
amino acids
Which does carries out its function in the ribosome
a. DNA
b. mRNA
c. tRNA
d. rRNA
rRNA
A strand of Amino acids form a ______
Protein
Translate the mRNA strand
AUG CCA UAG
Met - Pro - Stop
The genetic code of an organism is determined by
a) the shape of the protein
b) The number of amino acids
c) The sequence of nitrogen bases
d) the speed at which polypeptides are produced
c) The sequence of Nitrogen bases in the organisms DNA
What is the function of DNA Polymerase
To read the DNA strand and add complementary DNA nucleotides
Which Nitrogen bases are Purines
Which Nitrogen bases have 3 hydrogen bonds
Purines: Guanine and Adenine
3 hydrogen bonds: Guanine and Cytosine
Explain what happens in transcription
transcribing of mRNA strand using the DNA strand templet. Once completed the mRNA strand leave the Nucleus and finds its way to the ribosome
What is the purpose of a replication fork
To speed up the process of DNA Replication
What is the function of DNA Helicase
Breaks the hydrogen bonds between the DNA strand so DNA replication can begin
What is the function of RNA Polymerase?
Temporarily unzips DNA strand and adds complimentary nucleotides to a new growing mRNA strand
Name the 3 types of RNA and their functions
mRNA Messenger RNA- contains DNA’s geneic code and delivers it to the ribosomes.
tRNA Transfer RNA- transfers amino acids to the matching mRNA codon.
rRNA Ribosomal RNA- a component of ribosomes that helps bind amino acids together to form proteins.
Describe what happens during translation
tRNA uses mRNA to determine which amino acids are required to make protein
What is the difference between a leading and lagging strand in DNA replication
Leading follows DNA Polymerase and is a continuous strand
Laggin strand goes the opposite direction as the DNA polymerase and is a bunch of disconnected strands