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When gold beads were injected into a cell to see whether or not they could get into the nucleus itwas discovered that beads bigger than 9 nm in diameter (orbigger than the size of a proteinwith a molecular weight of ~40,000) could not get intothe nucleus. Yet we know thatsome […]

Q1. Activation of T cells requires that antigens be presented from antigen-presenting cells, not simply by exposure to the antigen in solution. What biological rationale may underlie this requirement – consider both from the perspective of how this can aid in the generation of a cytotoxic T cell response, and […]

a series of protein free patient blood samples at time; 0, 30, 60, 90, 120, 180 mins. I also have a standard sample. I have measured the absorbance of these samples; 0.655, 0.717, 0.689, 0.430, 0.852, 0.477 respectively. Standard sample 0.760 The glucose concentration in the standard test tube is […]

Q1. The palomino horse is golden in colour. Unfortunately for horse fanciers, palominos don’t breed true. In sequence of matings between palominos, after that offspring were obtained: 64 palominos: 32- cream-colored, 32- chestnut (reddish brown) what is the possible mode of inheritance of palomono coloration? Q2. A 40 year old […]