Would you expect Penicillin G to show a Zone of Inhibition around its disk on a plate inoculated with E. coli ? Explain briefly ?

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н, о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.

Stage in which a star’s outer layers have started to cool and grow outward?

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o