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