6. At the resting membrane potential in a neuron: the opening of sodium channels will result in an outward flow of sodium ions. the sodium/potassium pump is inactive. the sodium/potassium pump moves K* ions out of the axon and Na* ions into the axon. extracellular Na* ion concentration is lower than intracellular Na* ion concentration. intracellular K* ion concentration exceeds extracellular K* ion concentration. 7. Jacanas are polyandrous tropical birds. The males do most of the work of incubating eggs and taking care of oftspring. What behaviors might we expect to see in these birds? Females fight for territories; males are larger than females. Females fight for territories and are larger than males. Males fight for territories; females are larger than males. Males fight for territories and are larger than females. Males and females compete equally for territories and are sexually monomorphic. 8. Relative to birds, more mammalian species are: monogamous. b) polygynous. polyandrous. sexually monomorphic. Both b and d) are correct