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A population of T cells has been stimulated to proliferate in response to a particular antigen. A sample of 1000 cells is examined microscopically, revealing that 200 of these cells are in the various stages of mitosis. Of the remaining 800 in interphase, 400 have x amount of DNA, 250 […]

Select one (1) of the following biotechnology topics to write about: Genetically modified crop plants Genetically modified microorganisms Genetically modified animals Personal genomics and / or personalized medicine for humans Gene therapy Write a four to six (4 to 6) page paper on your chosen topic. Organize your paper into […]

Q1. Different squamous cells, cuboidal and columnar cells have large, open cytoplasms. Which of the functions of epithelial tissue is support by having such big cells? Q2. All through the millennia in which selective breeding was practice, why did breeders fail to uncover the principle that traits were governed by […]

1. Explain, briefly, why the 10-fold difference in concentration of Na+ across the membrane is important to excitable membranes. 2. How do voltage-gated calcium channels relate to electrical activity of the neuronal vs. sarcolemmal membrane? Concentrate on the differences. Keep your answer brief (3-4 sentences). 3. Why are muscle action […]