Question

I need help with 17 and 18 please. Thank you so much!!

Question 17 1 pts Study the table below that shows the results from an experiment attempting to order genes in a biochemical pathway. Strains 1.2 and 3 are each mutated in a different step in this pathway. Which mutant, when wild type (normal) catalyzes which step? I.e., what order of strain number goes under the arrows? None Compound A Compound B Compound C Strain 1 Strain 2 Strain 3 Strain 2 would catalyze the first step, strain 1 the second step, strain 3 the third step Strain 1 would catalyze the first step, strain 2 the second step, strain 3 the third step Strain 3 would catalyze the first step, strain 2 the second step, strain 1 the third step Strain 1 would catalyze the first step, strain 3 the second step, strain 2 the third step

Answer 1

when A is given all the strains grow so A is the final product, when C is given only 2 strains can grow, so C is converted to A, and when B is given only strain 1 can grow so B is an intermediate prior to C.

according to the table when A is given all the strains can grow means A is the final product of the metabolic pathway, when compound C is given strain 3 cannot grow but all others can grow means the strain 3 has a mutation in the gene which converts C to A when compound B is given only strain 1 grows, so strain 1 has a mutation in the gene which converts the precursor to B.

precursor →B> precursor A

17) so the answer is B) strain 1 would catalyze the first step, strain2, the second step, strain 3, the third step.

18) the order is

d) precursor $\rightarrow$ ​​​​​​B$\rightarrow$C$\rightarrow$A