What is the function of cAMP in regulation of the lac operon?
A. It causes attenuation.
B. It activates an activator protein.
C. It inactivates a repressor protein.
D. It activates a repressor protein.
E. It inactivates an activator protein.
Ans: B. It activates an activator protein.
You might also like to view...
What type of neuron directly stimulates a muscle or gland?
a. afferent neuron b. efferent neuron c. interneuron d. afferent and efferent neurons e. afferent neurons and interneurons
What is depicted in the above diagram?
a. a sensory neuron b. an interneuron c. a motor neuron d. a neuroglial cell e. none of these
One would expect a human protein to show closest similarity with the same protein in
1. E. coli. 2. yeast. 3. chimpanzees. 4. fish. 5. snakes.
A primary advantage of using integrated nutrient management compared to inorganic chemical fertilizers is that
A. chemical fertilizers are not soluble in water. B. chemical fertilizers break down very slowly. C. less organic fertilizer is needed than chemical fertilizers. D. only organic fertilizers contain micronutrients. E. organic fertilizers release nutrients more slowly.