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Suppose we use X-ray crystallography to determine the three dimensional structures of leucine and histidine at pH 8. This technique enables the determination of the positions of all the C, N, and O atoms in these two amino acids, but the hydrogen positions cannot be directly visualized with this technique. For which of the hydrogen atoms in these two structures will it be possible to infer the hydrogen positions, so that it is unnecessary to measure them?
Make the statement that there is an equal number of all four bases (A, T, C, G) and that the sequence of bases is random, how often will a single operator be expected to appear by chance. What factors or clues lead you to this diagnosis.
Suppose you were to construct a synthetic RNA from a repeating dinucleotide AGAGAGAGAG and then use it as a messenger to synthesize a polypeptide in an invito system. What kind of polypeptide would you make from this polynucleotide? Would you expe..
If a single rod-like (cylinder) E. coli was 2um long and 0.8um in diameter, and had a density of 1.1 x 10^3, what would be the mass of a single cell?
Which type of symmetry does each of the following animals display? Sponge, hydra, bobcat, jelly, snake, turtle, and octopus. Group these animals in either asymmetry, radial symmetry, and bilateral symmetry.
they must then demonstrate that the pathogen will not harm desirable species such as soybeans ( a close relative to kudzo). Describe an experiment that could fulfil this purpose, including all steps of the scientific method, Identify control(s) de..
The phenotypic variances were 9.4 cm2 for the inbred strain and 26.4 cm2 for the randomly pollinated population. Guess the broad sense heritability of ear length in these populations. What are the usual frequencies of the gametes from a plant with th..
Write down an equation that describes the synthesis of DNA. dNTPs is an abbreviation for the four deoxyribonucleoside triphosphates that can be added to the template strand.
Assume you are an ecologist studying a population of gerbils that can be found in nature with three different colors. An individual gerbil can be, dark brown, medium brown, or light brown.
Scientific Inquiry, Controlled Experiments Then and Now Start by observing the living species around you. Ever wonder why a pollinator is attracted to a particular flower
Assume that the rate of sea-floor spreading was constant during the 1-million-year period depicted above, what have to be the approximate age of marine fossils found in undisturbed sedimentary rock instantly overlying the igneous rock at the arrow la..
Assume you are analyzing the function of an unknown drug that you suspect alters metabolism in human cells. You add the drug in different amounts in a colony of cells and find that above a certain concentration,
Explain how many kinetochores are there within the human cell at mitosis? Surprise, your boss has invited himself or herself to dinner! All you have is some wilted, day old lettuce.
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