Tracheophyte plants are characterized by all of the following except
A. specialized conducting systems.
B. waxy cuticle.
C. stomata.
D. homospory or heterospory.
E. seeds.
E. seeds.
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Which of the following lacks sufficient penetrating power for bulk sterilization?
A. Alpha and beta particles B. Gamma radiation C. Ultraviolet (UV) radiation at 260 nm D. X rays
When ATP is split into ADP and Pi,
a. the energy is released in the form of heat. b. the energy is directly transferred to the target molecule by an unknown mechanism. c. the binding of ADP or Pi to the target molecule allows the energy of ATP hydrolysis to be transferred to the target molecule. d. the two remaining phosphates acquire the energy that had been present in the linkage of three phosphates. e. the resulting delta G is positive.
Some krill appear to have an additional purpose for molting. What is this alternate purpose? a. As a defense mechanism
b. To produce bioluminescence in the water. c. To feed larger organisms in the food chain. d. To attract attention of mates.
Most of the ocean's productivity occurs ____
a. in the open ocean b. in the intertidal zone c. in the neritic zone d. near hydrothermal vents e. in the benthic province