You begin an experiment with two populations of E. coli that are each composed of 100 cells. The cells are all genetically identical (i.e., they are clones). You grow them up in flasks on a lab bench under identical conditions with unlimited resources
After 10,000 generations, you
analyze the genome of each population. Do you expect the genomes of each population to
be identical after 10,000 generations?
A. Yes, because the starting populations
were genetically identical.
B. Yes, because resources were unlimited.
C. No, because mutations will accumulate
independently in each population.
D. No, because natural selection was not a
factor at any point in this experiment.
E. No, because mutation and natural
selection (once genetic variation is present)
were factors in this experiment.
E
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A new antibiotic has been developed that inhibits the activity of an enzyme by competitive inhibition. What effect will this have on the activation energy of the enzyme-catalyzed reaction?
A. The activation energy required for the reaction in the presence of the antibiotic would be greater than the activation energy required in the absence of the antibiotic B. The activation energy required for the reaction in the presence of the antibiotic would be less than the activation energy required in the absence of the antibiotic C. The activation energy required for the reaction in the presence of the antibiotic will be the same as the activation energy required in the absence of the antibiotic
Individuals who have an active case of tuberculosis may spread the disease simply by ________ uninfected individuals
A) coughing near B) shaking hands with C) hugging D) sexual contact with
Which of the following parameters correlates with an increase in the amount of cellular DNA?
A. decrease in cell size B. increase in cell complexity C. increase in cell size D. decrease in body complexity E. increase in cell complexity and cell size
The evolution of binary fusion solved the mechanical problems associated with distributing long DNA molecules
without breakage.
a. True b. False