Uncategorized

1. You have discovered a new species of bacteria. You are able to transfer F factor to the chromosome of this bacteria in two strains (2 different insertions). Both of these strains are a+, b+, c-, d+, e-. An F- strain is a-, b-, c+, d-, e+. You look at […]

The enzyme papain is a thiol protease, using a mechanism similar to the mechanism used by chymotrypsin, except that there is an active site Cys in papain carrying out the catalytic role played by the active site Ser of chymotrypsin. There is a His residue in papain that plays the […]

A “pulse-chase” experiment using 14C -labeled carbon sources is carried out on a yeast extract maintained under strictly anaerobic conditions to produce ethanol. In this experiment, a small amount of 14C -labeled glucose is incubated with the yeast just long enough for each intermediate molecule in the glycolysis pathway to […]

Flask A contains yeast cells in glucose-minimal salts broth incubated at 30C with aeration. Flask B contains yeast cells in a glucose-minimal salt broth incubated at 30C in an anaerobic jar. -Which culture produced more ATP?-Which culture had a shorter generation time?-which culture had a greater cell mass?-which culture produced […]