A mutation in the gene that codes for a connective tissue protein called fibrillin causes ____________________.Fill in the blank(s) with the appropriate word(s)
Marfan syndrome
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A gaseous hormone produced by plants that helps control fruit ripening is
A. carbon dioxide. B. auxin. C. ethylene. D. chlorophyll. E. carotene.
Biogeography is the study of
a. the distribution of land masses. b. the patterns in the geographical distribution of species. c. the patterns of species dispersal. d. the pattern of population demographics. e. none of these
The composition of lipids in the outer and inner monolayers of cell membrane lipid bilayers is
A) asymmetrical; i.e., different in each monolayer. B) identical in each monolayer. C) twice as concentrated in the inner monolayer as in the outer monolayer. D) highly random for each monolayer. E) the same for all cell plasma membranes but different from the composition in mitochondrial and chloroplast membranes.
Streptoymces erythraeus is the bacterial source of which antibiotic?
A) Penicillin B) Streptomycin C) Erythromycin D) Bacitracin E) Ampicillin