During the early stages of sporulation in Bacillus subtilis, ________ is active in the forespore and ________ is active in the mother cell.
A. ?K; ?F
B. ?E; ?F
C. ?F; ?K
D. ?F; ?E
Answer: D
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Which of the following is NOT an advantage that fungal mycorrhizae bestow upon plants?
A. The fungus supplies water to the plant. B. The fungus supplies mineral nutrients to the plant. C. The fungus binds the soil and prevents erosion. D. The fungus protects the plant against pathogens and toxins. E. The fungus supplies organic food to the plant.
The use of recombinant DNA technology to produce commercial products is known as ____________________
Fill in the blank(s) with correct word
Energy flow is one-way because ____
a. all of the energy in an ecosystem stays constant b. the amount of energy a producer harvests is equal to the amount of energy consumers consume c. with each energy transfer, some energy escapes as heat d. energy cannot be created but it can be destroyed e. there is only one form of energy
When yeast cells are cultured in the presence of both glucose and galactose, the GAL genes are
A) transcribed and then translated. B) transcribed but not translated. C) neither transcribed nor translated. D) translated but not transcribed. E) transcribed and translated simultaneously.