n the advent of genetics and molecular data, would it disregard the morphological method of identifying organisms in constructing the phylogenetic tree of life?
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In the advent of genetics and molecular data, would it disregard the morphological method of identifying organisms in constructing the phylogenetic tree of life?
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- What is Donnan's theory? What is its importance in biophysical chemistry?Identify and provide an explanation of what “Separation Science” entails and its importance with the respect to the chemical analysis of food. Provide an example.student found a bottle of unknown origin in the basement of an "CAUTION—contains С₁H₁O.” No other A old house. The bottle was labelled information was given, but inside the bottle were some white crystals. The student took the bottle to a chemistry laboratory, where she analyzed the crystals with the help of the laboratory staff. C₁2H₁6O reacted with Br₂ in CCl4 adding one mole of Br, and forming C₁₂H₁OB2₂. When a sample of C₁₂H₂O was reacted with O3 followed by Zn/H₂O, two different samples, J and K, were obtained. Compound J had a molecular formula of C.HgO₂, and its NMR is shown below. Compound K had a molecular formula of C₂H₂O, and it could be oxidized to compound L, with a molecular formula of C₂H₂O₂. The IR spectrum of L showed a very wide, strong band centred around 3000 cm*¹. The NMR spectrum of L showed only two different absorptions: a doublet (6H) at 0.9 ppm and a septet (1H) at 3.6 ppm. There was also a singlet (1H) off the scale at 11.8 ppm. students, deduce possible…
- Consider Molecule X, which is found in all living cells. This single-strand nucleic acid folds into a compact shape and forms a large complex with about 80 proteins. This complex is responsible for synthesizing new proteins in a living cell. What is the name of X? Your answer should be one word, or a short two- or three-word phrase. Spelling counts. Note: if there is more than one possible answer, separate each answer with a comma. ☐ ×1. Write a report comparing the principles, limitations/capabilities of the following microscopic techniques. (a) Optical Microscopy(b) Scanning Electron Microscopy(c) Transmission Electron Microscopy(d) Atomic Force MicroscopyThe study of detecting small quantities of substances in samples would most likely be performed by a chemist in the branch of chemistry known as ___ . organic chemistry biochemistry inorganic chemistry analytical chemistry physical chemistry
- Which of these statements are qualitative? Which are quantitative? Explain your choice in each case. (a) Sodium is a silvery-white metal. (b) Aluminum melts at 660 C. (c) Carbon makes up about 23% of the human body by mass. (d) Pure carbon occurs in different forms: graphite, diamond, and fullerenes.Suppose the metallic paper clips (which contain iron) had been replaced by magnesium or nickel. Would using a magnet as a method of separation have worked?A new compound has the empirical formula GaCl2. Thissurprises some chemists who, based on the position of gallium in the periodic table, expect a chloride of gallium to have the formula GaCl3 or possibly GaCl. They suggest that the “GaCl2” is really Ga[GaCl4], in which the bracketed group behaves as a unit with a -1 charge. Suggest experiments to test this hypothesis
- Briefly define the phrase “fit-for-purpose” in relation to analytical chemistry.Draw the condensed structural formulas of stearic acid and oleic acid. You can either type out the condensed structural formula (using subscripts were approrpriate) or attach a picture of hand-drawn condensed structural formulas. Normal BIU ×=| ||† X₂|X²|→ 三: = fxe TxFill in the following blanks. As the dye concentration increases, the absorbance of the light [linearly increases, linearly decreases, exponentially increases or exponentially decreases]. The dye concentration units are [molar (M), millimolar (mM) or grams per liter (g/L)] . Although most people wrongly conclude that absorbance has units nm, in fact, absorbance is unitless. This is because it results from a ratio of light through a colored sample relative to light intensity through a clear (blank) sample. The units for the slope of the graph would be [mM, 1/mM or nm] . Hint: the slope is the change in y values divided by the change in x values. The units for the y-intercept of the graph would be [nm, nM or unitless] . The value for the slope of the line that describes the absorbance data is [6.4597 or 0.0008] The value for the y-intercept of the line that describes the absorbance data is [6.4597 or 0.0008] .