BIOLOGY 1406 Exam 2
True/False: A sequence of four nitrogen bases make up a codon
False
True/False: DNA Polymerase III is required for transcription
False
True/False: In eukaryotes, both transcription and translation occur in the cytoplasm
False
True/False: In eukaryotes, when transcription is complete, the RNA is not processed and is ready to be sent to the ribosomes
False
Chargaff determined that DNA from any source contains the same amount of cytosine as _______________.
Guanine
A Replication Fork:
Is a Y-shaped structure where both DNA strands are replicated simultaneously
How many codons are needed to specify 3 amino acids?
3 Codons
Which of the following nucleotide sequences represents the complement to the DNA strand: 5' - AGATCCG - 3'
3' - TCTAGGC - 5'
Which of the following best describes semi-conservative replication?
A DNA molecule consists of one parental strand and one new strand
What name is given to the first mRNA codon?
AUG
Uracil forms a complementary pair with ________________ in RNA and _______________ in DNA.
Adenine; Adenine
Which of the following types of processing does eukaryotic mRNA undergo before it becomes functional?
All of these
What is the role of tRNA during translation?
Carry amino acids to the mRNA for correct placement into the protein chain
Which of the following cause the unwinding of the DNA double helix?
DNA Helicase
This enzyme's function is to synthesize DNA
DNA Polymerase I
Which of the following statements about DNA is false?
DNA is only found in eukaryotic cells
In ALL organisms, the AUG codon codes for:
Start Codon
The two molecules that alternate to form the backbone of a polynucleotide chain are:
Sugar and Phosphate
Translation
This diagram shows which cellular process?
Transcription
This process is known as?
True/False: Lac operon is an inducible operon
True
True/False: When DNA replicates, Adenine always pairs with Thymine, and Cytosine always pairs with Guanine
True
Which nitrogen base is found in RNA, but not in DNA?
Uracil
________________ determined the structure of the molecule DNA.
Watson, Crick, and Franklin
Anticodon
What is A in the picture?
Protein (Chain of Amino Acids)
What is the product of Translation?
Initiating DNA synthesis
What is this picture doing?
Linking short DNA segments
What is this picture doing?
Okazaki Fragments
What is this?
Single Stranded Attachment Region for Amino Acids
What is this?
The Final Product of Transcription is:
mRNA
The codon is found in the:
mRNA
