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Q. Consider a transmembrane protein complex that forms a hydrophilic pore across the plasma membrane of a eukaryotic cell. The pore is made of five similar protein subunits, each of which contributes a membrane-spanning alpha-helix to form the pore. Each alpha helix has hydrophilic amino acid side chains on one side of the helix and hydrophobic amino acid side chains on the opposite side. Propose a possible arrangement of these five alpha helices in the membrane. Feel free to sketch this structure, but make sure you label everything clearly.
How may someone become hyponatremic in a country where the salt content of food is generally very high. What about the function.
Cyanobacteria grow prolifically in streams and lakes with low oxygen levels and high nutrient concentrations. How may the presence or absence of cyanobacteria be used as an index of pollution in lakes.
Prepare an essay on nosocomial infection.
What are some potential research questions that would be interesting to ask of the species prepare a hypothesis and an experiment to test your hypothesis.
Which of statements concerning the sperm might be true. These data let you to infer that the species belongs to which protist groups.
How, at what time the shoot tip touched the other plant's stem did the shoot switch from growing straight to growing in a spiral? Write down a hypothesis first.
The tRNA in the E site will leave and migrate to its aminoacyl-tRNA synthetase d. where the tRNA will be recharged with the correct amino acid.
What aspects of the native organ function are replicated, and which are not? (this should include a quantitative analysis of function, for example filtration rates in artificial kidney compared to natural kidney)
What is BOD and how is it determined. Dr. Haxton told one of his students, "To move in the bloodstream, fats need the help of phospholipids." What will a good student say.
What substance is known as the "spreading factor?" How does the "spreading factor" aid an organism in its quest to penetrate the host cell? What is the dissimilarity between net primary production and net primary productivity.
What combination(s) of chromosomes are possible in haploid cells following both divisions of meiosis? (Hint: remember independent assortment). A diploid cell contains three pairs of homologous chromosomes designated C1 and C2, M1 and M2, and S1 and S..
Chooses the statement that best describes a buffer. A buffer prevents pH of a solution from changing while an acid or base is added.
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