A new bacterial molecule is discovered. This molecule binds to an antibiotic and facilitates the binding of a phosphate group, thus inactivating the antibiotic. Which category best describes the mechanism of antibiotic resistance conferred by this molecule?
a. conjugation
b. altered porins
c. rapid efflux of the antibiotic
d. bacterial enzymes
Answer: d. bacterial enzymes
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To convert a nucleoside into a nucleotide, what moiety must be added?
A. One or more pyrimidine bases B. One or more phosphate groups C. One or more double bonds D. One or more purine bases
Which of the following is a type of roots?
A. buttress B. pneumatophores C. prop D. lateral E. All of the choices are correct
The pigment ____ is commonly found in bacteria but not land plants
a. chlorophyll a b. chlorophyll b c. xanthophyll d. phycocyanin e. carotene.
Which of the following is NOT true?
a. Intermediate filaments and actin filaments treadmill b. Intermediate filaments and microtubules have a single monomer c. Intermediate filaments and microtubules have a role in the centrosome d. Two of the above e. None of the above