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Before freezing, you count your cell suspension in the presence of trypan blue. The initial volume of thecell suspension is 10ml. You add 0.1ml of the cell suspension to 0.1ml of trpan blue. Using the hemocytometer, you obtain an average count of 44 white and 5 blue cells. What is the cell number/ml for the suspension? What is the total cell number? What percentage of the cells are viable?
Women's bladders, on average, are smaller than those of men. The distribution of bladder volume in women is approximately N (400, 75) in milliliters. Find the proportion of women's bladders with a volume between 500 and 600 ml.
Estimate how would you explain the change in variation of the virus population after 1000 generations? There is more variation after 1000 generations.
A plant increased from one of Mendel's yellow pea is selfed. Three progeny peas from this are obtained and they are all green. Is the original plant homozygous or heterozygous.
Arrange the amino acid substitutions in increasing order of conservatism and amino acids are given using one letter codes to give you some practice in using those.
If C-1 of glucose is radioactively labeled & then enters glycolysis, which carbon of G-3-P will be labeled? Determine what fraction of the molecules will carry radioactive label?
How many grams of methane should be combusted to heat 1.30 of water from 24.0 to 92.0, assume as product and 100 percent efficiency in heat transfer.
Explain why a deficiency either of vitamin B12 or of folate causes red blood cells to be larger than normal.
The altered tRNA translates the UGA as tryptophan. What nucleotide varies has probably occurred in the mutant tRNA molecule? What consequences will the presence of such a mutant tRNA have for the translation of the normal genes in this cell.
5-different mutations were derived from base pair substitutions at a single codon. In this codon, the mutant alleles had arginine, leucine.
A dominant allele, A, causes yellow color in rats. The dominant allele of another independent gene, R, produces black coat color.
Two aqueous urea solutions have osmotic pressures of 2.4 atm and 4.6 atm, respectively, at a certain temperature.
Illustrate four organelles or structures that all eukaryotic cells have in common. In adding, describe two eukaryotic cell features that would be found only in autotrophic cells.
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