For the lactose operon, lactose is a(n):
A. inducer.
B. promoter.
C. activator.
D. repressor.
E. operator.
A
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Boiling is very effective at removing most common waterborne pathogens
Indicate whether this statement is true or false.
What will be a consequence if current predictions of global warming are accurate?
A. Freshwater will be more widely available. B. Organisms will need to migrate or adapt quickly in order to survive. C. Rates of natural selection will decrease. D. New continental land masses will appear. E. Many plants and animals will become smaller.
The bivalves started to die one by one; only the undamaged shells remained. To keep the remaining bivalves alive, the teacher would most likely need to remove the _____
A) sea anemones B) sea star C) gastropods D) ectoprocts
Which of the following indicates a poorly designed study?
A) a control group B) variables were controlled C) bias D) follow-up studies