Q1. Parasite schistosoma mansoni’ infects humans by penetrating the skin. The larva secretes enzymes that catalyze the cleavage of paptide bonds between residues x and y in the sequence Gly-Pro-X-Y-. Why this enzyme activity is is important in this parasite? Q2. Many infected animals are induced by the parasitic microsporidians […]

To be able to properly analyze a sample of DNA, you need to have at least 1 ug of the DNA of interest. Assumptions: PCR is run with 30 cycles; Molecular weight of nucleotide = 330 g per mole for a single stranded DNA. a. Given that you can use […]

From a mating of two dihybrid individuals (e.g. AaBb x AaBb) how many of the 16 possible zygote combinations would be expected to contain only two dominant genes?  (Assume that the two pairs of genes are located on different chromosomes). In pea-plants, flower colour and height are determined by single […]

Red blood cell membranes are completely impermeable to sodium, potassium and chloride ions, however they are permeable to both water and urea. The concentration inside a red blood cell is 300mOsm and consists predominantly of sodium and potassium chloride. a) With the aid of diagrams, decide what would happen to […]