The lac operator site within the lac operon is an example of which of the following?
A. cis-acting element
B. para-acting element
C. trans-acting element
D. inter-acting element
E. contra-acting element
A. cis-acting element
You might also like to view...
Choose the best cause and effect sequence for the process of speciation by natural selection.
A. Variation --> Selection --> Reproductive Isolation --> Mutation --> Speciation B. Mutation --> Variation --> Selection --> Reproductive Isolation --> Speciation C. Speciation --> Reproductive Isolation --> Selection --> Mutation --> Variation D. Variation --> Reproductive Isolation --> Speciation --> Mutation --> Selection E. Selection --> Speciation --> Reproductive Isolation --> Variation --> Mutation Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about natural selection and speciation? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Tom recently started going to the gym, where he has taken up weight lifting. Increases in his
muscle mass are due to __________.
a. cell enlargement b. cell division c. an increase in the number of cells d. all of these
Why are hypotheses never accepted as proven by scientists?
A) A hypothesis cannot ever be true or false because it is an opinion. B) Experimentation cannot support a hypothesis because it only tests predictions. C) Hypotheses change every time a new experiment is conducted. D) Alternative hypotheses might provide a better answer to the research question.
The chromogenic media that you will be using is used specifically for
A) The isolation and differentiation of urinary tract pathogens. B) The isolation and differentiation of respiratory tract pathogens. C) The isolation and differentiation of pathogens that cause skin and eye infections. D) The isolation and differentiation of pathogens that cause digestive system infections.