The multidrug resistant pumps in many bacterial cell membranes function by
A. synthesis of enzymes that alter drug structure.
B. removing the drug from the cell when it enters.
C. bacterial chromosomal mutations.
Answer: B
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B. thuringiens bacteria is a remarkable resource for researchers and farmers alike when it comes to pest control. Why? Select all correct choices
A. It contains a Ti plasmid. B. It produces insect toxins. C. It is responsible for crown gall disease and can be used to kill parasitic plants. D. Its genes can be used to genetically engineer plants. E. It produces cardenolides.
If an enzyme is saturated, ____
a. it cannot continue to catalyze the reaction b. the reaction is at equilibrium c. the rate of the reaction will slow and the reaction will stop d. it recruits more reactants e. the reaction is being catalyzed at the maximum rate
Which type of plant hormone is primarily responsible for inhibiting leaf abscission?
a. gibberellins b. ethylene c. jasmonates d. abscisic acid e. auxins
You are examining a bacterial smear on a light microscope. You observe pinkish-red bacilli and blue cells of various shapes. You are probably looking at a smear prepared with the ________ stain.
A. Gram B. Ziehl-Neelsen acid-fast C. Schaffer-Fulton endospore D. Gomori methenamine E. Hematoxylin and eosin