Exam 4 Bonus (put 10% more points on your exam 4 grade!)
1)
Cytosine makes up 31% of the nucleotides in a sample of DNA for the organism Stessedoutakid studentous. What percentage of the
nucleotides in this sample will be thymine? _______
2)
The enzyme that generates novel DNA (DNA replication) is? _______________________
3)
Transcription is the process of making what single stranded Nucleic Acid from what double stranded Nucleic Acid?
____________ from _____________
4)
Postulated by Francis Crick, what is the Central Dogma of Molecular Biology?
5)
The viral life cycle that produces progeny phage is called? _________________________________
6)
The abnormal production of multiple copies of a single gene (causes cancer) is called? _____________________________
Part II Short-answer questions
1. Identify and state the primary functions of key enzymes and protein factors involved in DNA replication.
2.
Differentiate between the following.
a. exons and introns
b.
codon and anti-codon
c.
transcription and translation
3.
What is a repressible and an inducible operon? Provide an example of each.
4.
In general, how do a phage and an animal virus differ in terms of infecting the host?
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5.
The following scheme represents some small scale mutations that are observed in nucleotide sequences. The first
scheme shows a normal sequence (wild type) and the rest are mutant nucleotide sequences. Describe the type of
mutation that has occurred in each scheme.
A. _________________________________
B. _________________________________
6.
What is an emerging virus? What process contributes to its emergence?
7.
Give 4 examples of how biotechnologically produced products affect our lives.
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