Which type of vertebra has a transverse costal facet?
A) coccygeal
B) sacral
C) cervical
D) thoracic
E) lumbar
D) thoracic
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Alkaloids are considered "expensive" defense compounds to produce because:
A. they contain a lot of carbon, which is costly for plants to concentrate. B. they vaporize readily, so they constantly have to be synthesized. C. they contain nitrogen, an essential and often limiting element plants need. D. they often function in very small concentrations. E. they contain proteins, which are very costly for a plant to produce.
Dizygotic twins share _______ of their genetic information
A. 25% B. 50% C. 75% D. 100%
Which of these processes brings into the cell large macromolecules and particles by the formation of a vesicle in the outer membrane?
A) pinocytosis B) exocytosis C) endocytosis D) facilitated transport
You are working in an aquarium that has been breeding an endangered species of fish for return into the wild. You have a batch of progeny from the first generation of breeding. The staff are discussing whether to return those fish to an area that has been completely depleted, or add them to a partially depleted population. "Considering the Allee effect, what do you say?
A. "The area with the other fish may reduce the partially depleted population's exposure to disease." B. "They may survive better in a large school, and will have an easier time finding mates." C. "They may do better in the empty area without any competition for territory." D. "They may do better in the empty area without any competition for food."