How do spheroplasts and protosplasts differ?
A. Spheroplasts form from cocci and protoplasts form from bacilli.
B. Spheroplasts retain the peptidoglycan but protoplasts do not.
C. Spheroplasts retain their outer membrane but protoplasts do not.
D. There is no difference; these terms are synonyms.
Answer: C
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One possible fate for an exogenote is
A. degradation to nucleotides. B. independent replication and functioning. C. integration into the host chromosome. D. All of the choices are correct.
The episome in an Hfr strain is inserted near the trp (tryptophan operon) locus. This Hfr strain is grown with an F- Trp- strain. From this mating, we isolate an F+ Trp+ strain that can readily impart the Trp+ phenotype to F- Trp- strains, but no other traits are ever transferred. (When the original Hfr strain is mated with F? strains, traits other than Trp+ can be transferred, although at lower frequency than Trp+.) What most likely has happened?
A) An F? trp+ plasmid has been generated. B) Mutation occurred. C) Transduction occurred. D) Transformation occurred.
The synthesis of ____ is triggered when cells bind systemin
a. gibberellin b. auxin c. jasmonate d. cytokinin e. brassinosteroids
What primary structures package cellular secretions for export from the cell?
a. Golgi bodies b. ribosomes c. mitochondria d. lysosomes e. endoplasmic reticula