A scientist produced a batch of recombinant DNase I in E. coli cells and a batch in mammalian cells. She placed 0.1 mg of the E. coli-derived DNase I in a vial containing a solution of DNA, and she placed 0.1 mg of the mammalian cell-derived DNase I in a separate vial containing the same solution of DNA. The initial viscosity of the DNA solutions was identical. What do you expect the viscosity of the DNA solutions to be after ten minutes have passed, and why?
A. The viscosity of the mammalian cell DNase I vial will be lower than that of the coli DNase I vial because the mammalian cell DNase I will be functional and able to degrade the DNA.
B. The viscosity of the mammalian cell DNase I vial will be higher than that of the coli DNase I vial because the mammalian cell DNase I will be functional and able to degrade the DNA.
C. The viscosity of the coli DNase I vial will be lower than that of the mammalian cell DNase I vial because the E. coli DNase I will be functional and able to degrade the DNA.
D. The viscosity of the coli DNase I vial will be higher than that of the mammalian cell DNase I vial because the E. coli DNase I will be functional and able to degrade the DNA.
Answer:B
A scientist produced a batch of recombinant DNase I in E. coli cells and a batch in mammalian cells. She placed 0.1 mg of the E. coli-derived DNase I in a vial containing a solution of DNA, and she placed 0.1 mg of the mammalian cell-derived DNase I in a separate vial containing the same solution of DNA. The initial viscosity of the DNA solutions was identical. What do you expect the viscosity of the DNA solutions to be after ten minutes have passed, and why?
A. The viscosity of the mammalian cell DNase I vial will be lower than that of the coli DNase I vial because the mammalian cell DNase I will be functional and able to degrade the DNA. B. The viscosity of the mammalian cell DNase I vial will be higher than that of the coli DNase I vial because the mammalian cell DNase I will be functional and able to degrade the DNA. C. The viscosity of the coli DNase I vial will be lower than that of the mammalian cell DNase I vial because the E. coli DNase I will be functional and able to degrade the DNA. D. The viscosity of the coli DNase I vial will be higher than that of the mammalian cell DNase I vial because the E. coli DNase I will be functional and able to degrade the DNA.