In this experiment the pGLO plasmid is used. Is the arabinose promoter of this plasmid a constitutive or an inducible promoter?
A) Constitutive
B) Inducible
B) Inducible
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The most precise method of obtaining estimates of the absolute ages of geological deposits is
A. measure rates of sedimentary rock formation. B. measure the ratios of various radioactive isotopes in the deposits. C. apply the principle of superposition (younger deposits above older deposits). D. make salinity measurements in ocean sediment deposits. E. study the sequence of fossil types in the deposits.
Mycobacterium tuberculosis
A. lives in the soil. B. can survive for 8 months in fine aerosol particles. C. has a capsule. D. integrates its genome into host cell DNA. E. produces several virulence factor enzymes and an exotoxin.
The cervix is part of the
a. labium minor. b. ovary. c. uterus. d. oviduct. e. vagina.
From the point of view of an angiosperm, what is the function of fruit?
A) It is where the male gametophyte develops. B) It is a mechanism for the dispersal of seeds. C) It provides nutrients to germinating seeds. D) It attracts pollinators.