Crystallography - Study guides, Class notes & Summaries

The model of DNA structure proposed by Watson & Crick after analysis of Rosalind Franklin's X-ray crystallography data stated that DNA is: Correct Answer-a double stranded helix DNA polymerase requires a template but not a primer to synthesize a new strand of DNA. Correct Answer-False Watson & Crick and Franklin also proposed (and we know now that this is true) that the backbone of the DNA molecule is composed of: Correct Answer-sugar + phosphate Type the letter of the strand that repr...

MCB4304 Exam 2 Final Questions & Answers 2024/2025 When trying to solve a protein structure, why is it necessary to grow protein crystals prior to X-ray-crystallography? - ANSWERSthe proteins must all be oriented in the same manner in the unit cell. The helix-turn-helix DNA binding motif is a feature exclusive to prokaryotes. - ANSWERSfalse Helix-turn-helix DNA binding motifs exclusively interact with DNA base pairs. - ANSWERSfalse DNA binding proteins can interact with the DNA str...

In an analysis of the nucleotide composition of a double stranded DNA molecule, which of the following will not be found? A. C = G B. C + G = A + T C. A/T = C/G D. A - C = T - G - ANSWER B. C + G = A + T A controlled experiment.... A. Includes at least two groups, one of which does not receive the experimental treatment. B. Proceeds at a slow pace to guarantee that the scientist can carefully observe all results. C. Includes at least two groups, one different from the other by two or m...

biology 1406 exam 5 questions n answers latest updateIn 1928, __________ was surprised to find that when he killed pathogenic bacteria, then mixed the bacterial remains with living harmless bacteria, some living bacterial cells became pathogenic. - correct answer Frederick Griffith In 1952, ___________ used bacteriophages to show that DNA is the genetic material of T2, a virus that infects the bacterium Escherichia coli (E. coli). - correct answer Hershey-Chase __________ are viruses ...

In 1928, __________ was surprised to find that when he killed pathogenic bacteria, then mixed the bacterial remains with living harmless bacteria, some living bacterial cells became pathogenic. - Answer Frederick Griffith In 1952, ___________ used bacteriophages to show that DNA is the genetic material of T2, a virus that infects the bacterium Escherichia coli (E. coli). - Answer Hershey-Chase __________ are viruses that infect bacterial cells. - Answer Bacteriophages ______...

Biology 1406 exam 5 questions and answers already passed In 1928, __________ was surprised to find that when he killed pathogenic bacteria, then mixed the bacterial remains with living harmless bacteria, some living bacterial cells became pathogenic. Frederick Griffith In 1952, ___________ used bacteriophages to show that DNA is the genetic material of T2, a virus that infects the bacterium Escherichia coli (E. coli). Hershey-Chase __________ are viruses that infect bacterial c...

Radiation damage to biological macromolecules: some answers and more questions Elspeth F. Garmana * and Martin Weikb,c,d,e* a Laboratory of Molecular Biophysics, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK, bComissariat a` l’Energie Atomique, Institut de Biologie Structurale, F-38054 Grenoble, France, cCNRS, UMR5075, F-38027 Grenoble, France, dUniversite´ Joseph Fourier, F-38000 Grenoble, France, and e ESRF, 6 rue Jules Horowitz, BP 220, 380...

biology 1406 exam 5 In 1928, __________ was surprised to find that when he killed pathogenic bacteria, then mixed the bacterial remains with living harmless bacteria, some living bacterial cells became pathogenic. - correct answer Frederick Griffith In 1952, ___________ used bacteriophages to show that DNA is the genetic material of T2, a virus that infects the bacterium Escherichia coli (E. coli). - correct answer Hershey-Chase __________ are viruses that infect bacterial cells. - ...

Nucleoside vs. tide correct answers nucleoside: no phosphate group tide: A vs. B form of helix correct answers (both right handed) B: -predominant form in aq. -B can accommodate a spine of water molecules lying in the minor groove (not A): H bonding between h2o and DNA contributes to stability of B form -slightly tilted A: -RNA = always A b/c of steric hindrance in B w/ extra hydroxyl group -grooves are nearly equal -Bases lie farther to the outside and are strongly tilted with r...

biology 1406 exam 5 Collin College - Question and answers already passed biology 1406 exam 5 In 1928, __________ was surprised to find that when he killed pathogenic bacteria, then mixed the bacterial remains with living harmless bacteria, some living bacterial cells became pathogenic. - correct answer Frederick Griffith In 1952, ___________ used bacteriophages to show that DNA is the genetic material of T2, a virus that infects the bacterium Escherichia coli (E. coli). - correct an...