29 Questions
What is the outcome when a combination of smooth and rough bacteria is injected into a mouse?
The mouse dies
Which of the following is NOT a component of a nucleotide?
4-carbon sugar
What is the characteristic that distinguishes purines from pyrimidines?
Number of carbon rings
In a purine, which atom of the nitrogenous base is bonded to the sugar molecule via a glycosidic bond?
N9
What is the type of sugar found in RNA?
Ribose
What is the function of transformation in bacteria?
To acquire new genetic markers
What is the carbon on the sugar molecule attached to the nitrogenous base called?
1'
How do adenine and thymine pair in DNA?
Using 2 hydrogen bonds
How are the elements within a nitrogenous base numbered?
In numerical order only
What is the term for the molecule consisting of a sugar, a nitrogenous base, and a phosphate group?
Nucleotide
Which of the following is a correct example of a nucleotide?
Thymidynic Acid
What is the reason for the stronger bond between G and C compared to A and T?
G and C have three hydrogen bonds
What is the main difference between DNA and RNA in terms of their structure?
DNA is double stranded, while RNA is single stranded
How do guanine and cytosine pair in DNA?
Using 3 hydrogen bonds
What is the difference between the leading and lagging strands in DNA replication?
The leading strand is continuous, while the lagging strand is discontinuous
What is the role of helicase in DNA replication?
It unwinds the parental double stranded DNA
What is the role of the templet strand in DNA?
It guides the synthesis of mRNA via complementary base pairing
How does a frameshift mutation affect the codon structure?
It adds or removes a base, altering the normal 3-base pair codon structure.
Which of the following is an example of the consequences of a missense mutation?
The amino acid changes from Leu to Pro.
Which of the following is the correct example of a base?
Adenine
What is the direction of DNA synthesis on the leading strand?
5'-3'
Which enzyme is responsible for filling in gaps between Okazaki fragments?
Ligase
What are the consequences of a nonsense mutation?
The sequence is prematurely terminated.
What is the result of a silent mutation?
No change in amino acid sequence
What happens when a base is inserted into a codon?
The codon structure is altered, causing a frameshift mutation.
Which of the following is a correct example of a nucleoside?
Cytidine
Which statement is correct in regards to polyadenylation within transcription?
Eukaryotes utilize polyadenylation at the 3’ end
What is the primary difference between prokaryotic and eukaryotic transcription?
Presence of introns
Which of the following is the correct order of the Central Dogma?
DNA transcribed to RNA, then RNA translated to Protein.
This quiz is based on an experiment involving smooth and rough bacteria strains with different DNA characteristics. It explores the effects of transformation on the virulence of bacteria in mice.
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