The role of CAP in the lac operon is:
a. repression of RNA polymerase binding to the promoter.
b. negative control of the lac operon.
c. enhancement of RNA polymerase binding to the promoter.
d. to inactivate the repressor by binding to its allosteric site.
e. the activation of allolactose binding to the repressor protein
C
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Gram-negative broth serves which purpose when used in the bacterial fecal culture?
a. Evaluation of general flora and predomi-nant species b. Selection of enteric pathogens such as Salmonella, Aeromonas, and others c. Inhibition of normal flora and selection of enteric pathogens d. Enrichment for enteric pathogens such as Salmonella and others
In this diagram, which of the following numbers represents the actual event of egg activation? 
A. I B. II C. III D. IV E. V
Most genetically modified crops carry genes for ____
a. herbicide resistance b. disease and pest resistance c. nutritional enhancement d. making human medicines e. increased yields
In species where the young are precocial, meaning requiring little parental care, males may be more likely to be what?
A. monogamous B. polygynous C. polyandrous D. altricial