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A double-stranded piece of alien nucleic acid has been isolated. Each individual strand of the nucleic acid is 160 nucleotides long; for a total of 320 nucleotides in the isolated piece of nucleic acid. An initial analysis shows that of the 320 nucleotides, 95 contain the base uracil. How many nucleotides containing the base isoAdenine (iA) would be found in the isolated piece of double-stranded nucleic acid?
a. 0 b. 95 c. 190 d. 225 e. cannot be determined |
B. 95
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A double-stranded piece of alien nucleic acid has been isolated. Each individual strand of the nucleic acid is 160 nucleotides long; for a total of 320 nucleotides in the isolated piece of nucleic acid. An initial analysis shows that of the 320 nucleotides, 95 contain the base uracil. How many nucleotides in the piece of alien DNA would contain the base adenine?
Choose one answer.
a. 40
b. 70
c. 95
d. 140
e. cannot be determined
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E. cannot be determined
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A double-stranded piece of alien nucleic acid has been isolated. Each individual strand of the nucleic acid is 160 nucleotides long; for a total of 320 nucleotides in the isolated piece of nucleic acid. An initial analysis shows that of the 320 nucleotides, 95 contain the base uracil. If it were determined that the sugar-phosphates making the nucleotides in alien nucleic acid were similar in nature to those found on Earth, how many phosphate groups would be found in the piece of DNA?
Choose one answer.
a. 40
b. 80
c. 120
d. 160
e. 320
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E. 320
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5. Which set of experiments would be most useful to determine the replication method utilized by the alien life form?
Choose one answer.
a. isotope labeling methodology as utilized by Messelson & Stahl b. X-ray diffraction techniques as utilized by Rosalind Franklin c. biochemical isolation and purification techniques as pioneered by Chargaff d. bacterial transformation experiments conducted by Griffith e. biochemical purification procedures conducted by Avery, MacLeod and McCarty |
A. isotope labeling methodology as utilized by Messelson & Stahl
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A piece of human double-stranded DNA is isolated. The piece of isolated DNA contains 410 nucleotides and 88 of those nucleotides contain the base adenine. How many nucleotides in the piece of DNA would contain the base guanine?
Choose one answer.
a. 88
b. 117
c. 205
d. 410
e. cannot be determined
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B. 117
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A piece of human double-stranded DNA is isolated. The piece of isolated DNA contains 410 nucleotides and 88 of those nucleotides contain the base adenine. How many phosphate groups would be found in the piece of DNA?
Choose one answer.
a. 0
b. 88
c. 205
d. 410
e. cannot be determined
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d. 410 |
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A piece of human double-stranded DNA is isolated. The piece of isolated DNA contains 410 nucleotides and 88 of those nucleotides contain the base adenine.
How many molecules of uracil would be found in the piece of DNA? Choose one answer. a. 0 b. 88 c. 205 d. 410 e. cannot be determined |
A. 0
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A piece of human double-stranded DNA is isolated. The piece of isolated DNA contains 410 nucleotides and 88 of those nucleotides contain the base adenine. In the DNA molecule, which molecules are not bonded together?
Choose one answer.
a. adenine and thymine
b. deoxyribose and phosphate groups
c. cytosine and guanine
d. deoxyribose and adenine
e. phosphate groups and cytosine
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E. phosphate groups and cytosine
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