When referring to cell metabolism and using digital logic analogies, which of the following statements is correct? (Select all correct choices)
A)transcription of the lac operon is an example of an OR gate only, because both lactose and cAMP must always be present
B)transcription of the lac operon is an example of an OR gate only because either lactose OR cAMP must always be present
C)transcription of the lac operon is an example of an AND or OR gate because differences in the lactose concentration can lead to different transcriptional switch behaviors
D)transcription of the lac operon is an example of an AND or OR gate because differences in the cAMP concentration can lead to different transcriptional switch behaviors
E)transcription of the lac operon is an example of an AND gate only, because both lactose and cAMP must always be present

Question

Quizplus · Accepted Answer

Transcription of the lac operon can be analogized to both AND and OR gates because the expression of the lac operon depends on the presence of lactose AND cAMP (AND gate) or lactose OR cAMP (OR gate). Additionally, differences in the concentrations of lactose or cAMP can lead to different transcriptional switch behaviors, further supporting the use of both AND and OR gate analogies. Option A and B are not correct because they only refer to an OR gate and do not account for the role of both lactose and cAMP. Option E is not correct because it only refers to an AND gate, but does not account for the role of cAMP.

When Referring to Cell Metabolism and Using Digital Logic Analogies