Which of the following is a tree with needleshaped
leaves that are adaptations that
minimize water loss?
a. cacti
b. conifer
c. broadleaf evergreen
d. deciduous angiosperms
e. mesquite
B
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Many photosynthetic prokaryotes are capable of cyclic electron transport only. It is likely that such organisms can __________ but not __________
A. produce ATP; reduce H2O B. produce ATP; reduce CO2 C. produce NADPH; reduce CO2 D. produce NADPH; oxidize H2O E. reduce CO2; synthesize carbohydrates
Which of the following has shown some effectiveness in treating a herpes infection?
A. AZT B. Protease inhibitors C. Acyclovir D. Cephalosporin
MAPK and MEK are intracellular signaling proteins that mediate cell division induced by growth factors. When mutations in the normal MAPK and MEK genes result in an abnormally high level of MAPK and MEK activity and an increased rate of cell division, then the mutated gene is called a(n)
A. spliceosome. B. transposon. C. tumor-suppressor gene. D. oncogene. E. None of the choices are correct.
The ____ is shorter in females than it is in males, which explains the greater likelihood of developing bladder
infections in ____. a. ureter; females b. ureter; males c. renal papilla; females d. urethra; males e. urethra; females