The first topoisomerase identified was DNA topoisomerase I of bacteria. How was the activity assayed?
What will be an ideal response?
They tested fractions for the ability to relax superhelical lambda phage DNA.
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_____ will accumulate if a cell is treated with a proteasome inhibitor.
A. Secreted proteins B. Digested proteins C. Native proteins D. Unfolded proteins with ubiquitin attached E. Amino acids
The effect of directional growth shown in the accompanying figure is known to be caused by ____
a. thigmotropism b. gravitropism c. abscisic acid d. salicylic acid e. vernalization
A lung specimen from a pneumonia patient contains Gram-negative bacilli. Laboratory test results on the bacteria show they are nonmotile coliforms with a thick capsule. Which pathogen is the likely cause of the pneumonia?
A) Escherichia coli B) Enterobacter C) Hafnia D) Klebsiella E) Serratia
The energy released by ________ reactions is used to regenerate ________ which can then provide energy for ________ reactions.
A. anabolic, ATP, catabolic B. catabolic, glucose, anabolic C. anabolic, NADH, catabolic D. catabolic, ATP, anabolic