The characteristic lesion for tertiary syphilis is the presence of (gummas/necrosis/granulomas) in bones, in nervous tissue, or on the skin
What will be an ideal response?
gummas
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In a zygotic life cycle:
A. Haploid cells form gametes that fuse to produce thick-walled diploid zygotes capable of surviving stressful conditions. B. There is an alternation of generations. C. The zygote undergoes meiosis and produces many heat-resistant spores that increase the population size and aid in dispersal. D. Haploid cells form spores that in turn fuse to produce thick-walled zygotes capable of surviving stressful conditions. E. none of the choices provided.
Other than the proteins that they encode, what is a major difference between cell-specific and housekeeping genes?
a. Cell-specific genes are expressed only in a single cell type; housekeeping genes are expressed in all cell types. b. Cell-specific genes have promoter proximal elements and enhancers; housekeeping genes have only promoter proximal elements. c. Cell-specific genes have promoter proximal elements that use cell-specific activators; housekeeping genes use "universal" activators. d. Cell-specific genes are only found in certain cell types; housekeeping genes are found in all cell types. e. Cell-specific genes have promoter proximal elements that use "universal" activators; housekeeping genes have promoter proximal elements that respond only to specific activators.
Darker skin color is correlated with ____
a. the northern hemisphere b. inland regions c. coastal regions d. longitude e. the intensity of UV radiation
Which of the following lists plants in order from most primitive to most advanced?
A. ferns ® mosses ® angiosperms ® gymnosperms B. mosses ® gymnosperms ® ferns ® angiosperms C. mosses ® ferns ® angiosperms ® gymnosperms D. mosses ® ferns ® gymnosperms ® angiosperms