Question: The question is to detemine whether B-galactosidase is expressed under specified situations:Genotype Glucose only Lactose only Neither glucose nor lactoseI+ P+ O+ Z- / F’ I- P+ Oc Z+ – + + The answer indictes that the B-galactosidase is expressed whether lactose is present or not. I am confused because […]

Which of the following statements accurately describes the culture media necessary for growing Clostridium tetani? A.) A chemically defined medium is one made up of extracts such as those from yeasts, meat, or plants whose exact chemical composition may vary slightly. B.) A complex medium is one whose exact chemical […]

In yeast, ethanol is produced from glucose under anaerobic conditions. What is the maximum amount of ethanol (in millimoles) that could theoretically be produced under the following conditions? A cell-free yeast extract is placed in a solution that contains 3.50 × 102 mmol glucose, 0.30 mmol ADP, 0.30 mmol Pi, […]

A genetic mutation occurs that alters the specificity of the Golgi enzyme that phosphorylates mannose residues in theoligosaccharides of glycoproteins. The effect of the mutation issuch that the enzyme now indiscriminately and randomlyphosphorylates mannose residues on all glycoproteins passingthrough the Golgi complex. A. What is the normal role of this […]