The blablabla operon produces enzymes that convert compound a into compound b. the operon is controlled by a regulatory gene s. normally, the enzymes are synthesized only in the absence of compound b. if gene s is mutated, the enzymes are synthesized in the presence and in the absence of compound b. gene s must encode a(n): inducer. coactivator. activator. corepressor. repressor.

Consider darwin's first writings on the theory of natural selection. an important point of darwin's essay on the principle of population, written in 1798, was a peer's observation that in nature plants and animals produce far more offspring than can survive, this observation can be attributed to a) charles lyell. b) thomas malthus. c) jean-baptiste lamarck. d) johann friedrich meckel.

At which location in earth’s interior does the top density continue to increase as thickness decreases?

Why is it to call the calvin cycle the light independent reactions vs the dark reactions