Scientists can use mutants to study metabolic pathways. these organisms have a mutation in a gene encoding a metabolic pathway enzyme that results in the inactivation of that enzyme. saccharomyces cerevisiae (a yeast species) mutants are available that grow on fructose, but not glucose. this growth defect results from a mutation in the gene encoding what enzyme? phosphoglycerate kinase phosphoglycerate mutase pyruvate kinase phophoglucose isomerase (phosphohexose isomerase or glucose-6-phosphate isomerase) enolase

When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

Enzymes affect the reactions in living cells by changing the