#Question id: 23474
#Unit 1. Molecules and their Interaction Relevant to Biology
#Question id: 11146
#Unit 7. System Physiology – Animal
If you experimentally increase the concentration of Na+ outside a cell while maintaining other ion concentrations as they were, what would happen to the cell's membrane potential?
#Question id: 4715
#Unit 11. Evolution and Behavior
Claytonia virginica is a woodland spring herb with flowers that vary from white, to pale pink, to bright pink. Slugs prefer to eat pink-flowering over white-flowering plants (due to chemical differences between the two), and plants experiencing severe herbivory are more likely to die. The bees that pollinate this plant also prefer pink to white flowers, so that Claytonia with pink flowers have greater relative fruit set than Claytonia with white flowers. A researcher observes that the percentage of different flower colors remains stable in the study population from year to year. Given no other information, if the researcher removes all slugs from the study population, what do you expect to happen to the distribution of flower colors in the population over time?
#Question id: 4959
#Unit 11. Evolution and Behavior
If a fossil is encased in a stratum of sedimentary rock without any strata of igneous rock (e.g., lava, volcanic ash) nearby, then it should be
#Question id: 23320
#Unit 1. Molecules and their Interaction Relevant to Biology