A strain of E. coli is trp? his? lac?. Which medium would this bacterium grow on?
A) minimal medium with lactose as the sugar, supplemented with histidine and tryptophan
B) minimal medium with glucose as the sugar, supplemented with histidine and tryptophan
C) minimal medium with glucose and lactose as the sugar
D) minimal medium with glucose as the sugar
B) minimal medium with glucose as the sugar, supplemented with histidine and tryptophan
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The basic unit of matter is referred to as a(n) ____
Some help with this, please?
One of the limiting factors in engineering plants for nitrogen fixation is to prevent the binding of ________ to the enzyme nitrogenase and the subsequent inhibition of the enzyme.
A. calcium B. bacteria C. oxygen D. phosphorus E. cell membranes
Development of all the structures listed below occur during neurulation EXCEPT:
A. cells that will form future pigment cells and certain facial bones. B. the central nervous system. C. the neural crest. D. the archenteron. E. somites.
The evolution of life on Earth was made possible by ____
a. DNA b. organelles
c. an environment that favors oxygen photosynthesizers d. natural selection that favors efficient reproduction of organisms e. random mutations