Lactose is a corepressor in the lac operon.
Answer the following statement true (T) or false (F)
False
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The concentration of ____ has the greatest influence on the regulation of breathing rate
a. O2 b. CO2 c. H+ d. N2 e. CO
Enzymes increase the rate of a given reaction by lowering what kind of energy?
a. combination b. activation c. thermal d. electrical e. solar
In bacteria, restriction enzymes function to ____
a. identify sequences of interest in a DNA library b. produce human proteins c. provide antibiotic resistance d. chop up invading viral DNA e. make the cells vulnerable to viruses
If a stem is cut, what will occur if the xylem sap is under tension?
A. Xylem sap will spurt out B. Xylem sap will stay at the cut surface C. Air will be pulled into the xylem D. The cut surface will form bubbles if placed under water