#Question id: 28726
#Unit 2. Cellular Organization
KDEL receptor, located in the different vesicles, except?
#Question id: 737
#Unit 1. Molecules and their Interaction Relevant to Biology
Which structure below indicates the proper hydrogen-bonding pattern between amino acids in an α-helix? (Dashed lines represent the hydrogen bonds.)
#Question id: 8682
#Unit 9. Diversity of Life Forms
Giardia intestinalis can cause disease in several different mammalian species, including humans. Giardia organisms (G. intestinalis) that infect humans are similar morphologically to those that infect other mammals, thus they have been considered a single species. However, G. intestinalis has been divided into different subgroups based on their host and a few other characteristics. In 1999, a DNA sequence comparison study tested the hypothesis that these subgroups actually constitute different species. The following phylogenetic tree was constructed from the sequence comparison of rRNA from several subgroups of G. intestinalis and a few other morphologically distinct species of Giardia. The researchers concluded that the subgroups of Giardia are sufficiently different from one another genetically that they could be considered different species
Which of the following changes would a modern systematist be most likely to make after learning of the results of the rRNA analyses?
#Question id: 12592
#Unit 10. Ecological Principles
Use the following diagram of five islands formed at around the same time near a particular mainland and MacArthur and Wilson's island biogeography principles to answer the following questions.
Which island would likely have the greatest species diversity?
#Question id: 1284
#Unit 4. Cell Communication and Cell Signaling
The collagen triple-helix domain is NOT: