How do bacteria regulate transcription of these operons?
the trp and lac operons are regulated in various ways. how do bacteria regulate transcription of these operons? categories. 1) operon is not transcribed 2) operon is transcribed, but not sped up by the positive control 3) operon is transcribed quickly through postive control match each of these into the above categories
a. trp operon: tryptophan absent
b. lac operon: lactose absent
c. lac operon: lactose present, glucose absent
d. lac operon: lactose present, glucose present e) trp operon: tryptophan present

Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of plants’ stems. which is most likely to result in the greatest amount of error in their scientific experiment? a.one student measures the plant stem widths by using calipers. the other student measures the widths of the same plant stems again by using a different pair of calipers. b.one student measures the plant stem widths by using calipers. the other student types the measurements as they are taken into a computer spreadsheet. c.one student weighs liquids for the experiment by using a calibrated scale. the other student weighs liquids for the experiment by using a different calibrated scale.