Which positive regulatory protein is required for the production of phage coat protein in lambda?
A) CI
B) Cro
C) N
D) Q
E) None of these
D
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Bacteroids are ____
a. specialized nitrifying bacteria b. small buds from ammonifying bacteria c. specialized bacteria that help some plant roots absorb phosphorus d. enlarged and immobilized nitrogen-fixing bacteria e. interactions between plant root hairs and bacteria
Which forms the outermost whorl of flower parts?
a. sepals b. petals c. anthers d. pistils e. stamens
Which form of communication is used by social insects to modify the behavior of the colony?
A. auditory communication B. chemical communication C. visual communication D. None of the choices are used by social insects. E. All of the choices are used by social insects.
Which of the following is NOT a reason why growth rates in nature are slower than those in the lab?
a. Microbes in nature grow in mixed populations. b. Nutrient transport rates are slower in the environment. c. Distribution of nutrients throughout habitat is not uniform. d. Resources are frequently suboptimal.