Scenario from pre class: Initial analysis of the Mars sample reveals the presence of eukaryotic, unicellular life in a sample, Additional analysis indicates the presence of double-stranded nucleic acids similar, although not identical, to DNA found in eukaryotic organisms on Earth. The alien nucleic acids consist of two strands of nucleotides bonded together, with the sugar-phosphates on the outside of the structure. Six nitrogen bases located on the interior of the double-stranded nucleic acid are identified as: isoAdenine (IA), Uracil (U), isoCytosine (iC), isoThymine (iT), Adenine (A) and betaGuanine (bG). Data also suggests a complementary base-pairing between nitrogen bases of the two strands with the following base pairing rules: iA complementary with U iT complementary with A o bG complementary with iC

Scenario from pre class: Initial analysis of the Mars sample reveals the presence of eukaryotic, unicellular life in a sample, Additional analysis indicates the presence of double-stranded nucleic acids similar, although not identical, to DNA found in eukaryotic organisms on Earth. The alien nucleic acids consist of two strands of nucleotides bonded together, with the sugar-phosphates on the outside of the structure. Six nitrogen bases located on the interior of the double-stranded nucleic acid are identified as: isoAdenine (IA), Uracil (U), isoCytosine (iC), isoThymine (iT), Adenine (A) and betaGuanine (bG). Data also suggests a complementary base-pairing between nitrogen bases of the two strands with the following base pairing rules: iA complementary with U iT complementary with A o bG complementary with iC

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter8: The Structure, Replication, And Chromosomal Organization Of Dna

Section: Chapter Questions

Problem 17QP: Chemical analysis shows that a nucleic acid sample contains A, U, C, and G. Is this DNA or RNA? Why?

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Total nucleic acids are extracted from a growing culture of yeast cells. They are then mixed with specialized beads to which the single-stranded DNA molecule with sequence 5’-TTTTTTTTTTTTTTTTTTTTTTTTT-3’ has been covalently attached to the surface (see image to the right, where each black line represents a polynucleotide sequence). After a short incubation time, the beads are removed from the mixture. When you analyze the cellular nucleic acids stuck to the beads, which type of nucleic acid (i.e. DNA, rRNA, etc.) do you expect to be the most abundant? Why?
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In an attempt to understand whether viruses rely on proteins or nucleic acids to transmit their genetic information into their host cells, scientists were able to track the movement of phosphorus and nitrogen from the virus to its host cell. Which of the following describes the most likely conclusion from this observation? A B с D The molecule that is transmitted by the virus is a protein since proteins contain nitrogen but nucleic acids do not. The molecule that is transmitted by the virus is a protein since proteins contain phos- phorus but nucleic acids do not. The molecule that is transmitted by the virus is a nucleic acid since nucleic acids contain phosphorus but proteins do not. The molecule that is transmitted by the virus is a nucleic acid since nucleic acids contain nitrogen but proteins do not.
Give typing answer with explanation and conclusion to all parts Total nucleic acids are extracted from a culture of cells and are then mixed with resin beads to which the polynucleotide 5'-TITTTITTTTTTTTTTTTTTTT-3' has been covalently attached. After a short incubation, the beads are then extracted from the mixture. When you analyze the cellular nucleic acids that have stuck to the beads, which of the following molecules do you expect to be most abundant?
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