#Question id: 7703
#Unit 9. Diversity of Life Forms
Carolus Linnaeus believed that species remained fixed in the form in which they had been created. Linnaeus would have been uncomfortable with ________.
#Question id: 28579
#Unit 5. Developmental Biology
Which of the following growth factor causes proliferation of the Sertoli cell precursors and stimulates their differentiation?
#Question id: 361
#Unit 1. Molecules and their Interaction Relevant to Biology
Calculate the percentage of histidine that has its imidazole side chain protonated at pH 7.3. The pKa values for histidine are pK1 = 1.8, pK2 (imidazole) = 6.0, and pK3 = 9.2.
#Question id: 925
#Unit 1. Molecules and their Interaction Relevant to Biology
If an aerobic organism (e.g., the bacterium E. coli) were fed each of the following four compounds as a source of energy, the energy yield per mole from these molecules would be in the order:
#Question id: 3275
#Unit 11. Evolution and Behavior
When imbalances occur in the sex ratio of sexual species that have two sexes (that is, other than a 50:50 ratio), the members of the minority sex often receive a greater proportion of care and resources from parents than do the offspring of the majority sex. This is most clearly an example of ________.