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On the left (below) is an experimental drug, which is a nucleoside analogue. On…

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Wize University Biology Textbook > Viruses

Viral Infections & Hosts

3 Activities

Wize University Biology Textbook > Chemistry of Life

Nucleic Acids

7 Activities

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On the left (below) is an experimental drug, which is a nucleoside analogue. On the right is adenosine. The drug is used to treat RNA viruses (viruses that have RNA rather than DNA as their genetic material), such as Ebola. How do you think this works?

More Viral Infections & Hosts Questions:
The HIV virus has an RNA genome but is classified as a retrovirus because viral enzymes reverse transcribe the viral RNA into DNA that inserts into the host genome. A molecule called AZT is a nucleoside mimic often used as an antiviral drug against this step in HIV's replication cycle. Which statement below best describes how HIV might evolve resistance to AZT?
Which of the following best describes how the Human papillomavirus can cause cervical cancer without causing mutations in any coding regions?
Briefly describe the lytic cycle of a virus.
Briefly describe the lytic cycle
Viruses have been shown to be related to cancer when they get incorporated into the genome of host cells. Which of the following is most likely to result in uncontrolled cell growth?
The virus expresses a miRNA that specifically targets a tumor suppressor gene
The virus expresses a gene that activates the host cells survival and proliferation pathway
Which of the following best describes how the Human papillomavirus can cause cervical cancer without causing mutations?
From Term Test 2 Prep: Why are viruses not considered "alive"?
From Term Test 1 Prep: The HIV virus has an RNA genome but is classified as a retrovirus because viral enzymes reverse transcribe the viral RNA into DNA that inserts into the host genome. A molecule called AZT is a nucleoside mimic often used as an antiviral drug against this step in HIV's replication cycle. Which statement below best describes how HIV might evolve resistance to AZT?
Viral Evolution
Which of the following statements is TRUE regarding the use of antiviral therapies?
Why are viruses not considered to be alive?
i. They cannot reproduce on their own
ii. They lack the metabolic machinery to provide energy for themselves
More Nucleic Acids Questions:
Practice: Monomers and Polymers
Choose the pair of terms that correctly completes this sentence:
Nucleotides are to __________ as __________ are to proteins
Nucleic Acid -BIOL200
Describe at least 3 key differences between the structure of DNA and RNA. (Short answer)
Practice: Base Pairing
You are analyzing an organism's genetic sequence and find that its genome is made up of 24% cytosine. What percent of the genome is made up of adenine?
What are the three key components of a nucleotide?
Practice: Nucleic acid
What type of macromolecule is the following? Be specific!
Practice: Monomers and Polymers
Choose the pair of terms that correctly completes this sentence:
Nucleotides are to __________ as __________ are to proteins
Which of the following is found on RNA but not DNA?
i. Deoxyribose sugar
ii. Phosphate
Choose the pair of terms that correctly completes this sentence:
Nucleotides are to __________ as __________ are to proteins
Practice: Nucleic acid
Which macromolecule does the molecule below belong to?
Nucleotides are joined together to form long chains though a ___ reaction to form a ____ bond
What are the three Pyrimidines
Name the two purines
What are the three key components of a nucleotide
You are analyzing the genome of a certain organism and find that it is made up of 34% thymine bases. Therefore, you reason there must be
16
% guanine bases.
Nucleic Acid -BIOl200
You are analyzing a double stranded DNA sequence that is 80 base pairs long. The DNA has 45 thymine (T) bases. How many cytosine (C) bases are present in this DNA structure?
Nucleic Acid -BIOL200
Describe at least 3 key differences between the structure of DNA and RNA. (Short answer)
Rank the following DNA sequences in order of stability (1= most stable, 4= least stable).
Denaturation -BIOL200
You are analyzing two sequences in the lab.
Sequence 1: AATAGATACATTAT
TTATCTATGTAATA
Practice: Base Pairing
You are analyzing an organism's genetic sequence and find that its genome is made up of 24% cytosine. What percent of the genome is made up of adenine?
Practice Problem 3
Given the following DNA sequence, determine the sequence of the complementary strand.
5’-GTAACCTTGA-3’
Practice Problem 2
Below are the structures of two nucleotides. Label each, indicating the phosphate group, sugar (specify ribose or deoxyribose), and base (specify purine or pyrimidine).