#Question id: 5647
#Unit 5. Developmental Biology
Use the following information to answer the question. In order to test how sea urchin sperm bind to eggs, scientists isolated the egg receptor protein
that binds to the sperm acrosomal protein called bindin. Plastic beads were coated with egg receptor for bindin (ERB1) from eggs of the sea urchin Strongylocentrotus purpuratus, and then the beads mixed with sperm from S. purpuratus or from the related species, S. franciscanus. The researchers counted how many sperm were bound to each bead. The results are shown in the graph below. Treatments:
A: S. purpuratus sperm mixed with S. purpuratus ERB1 beads
B: S. purpuratus sperm mixed with beads containing no ERB1 protein
C: S. franciscanus sperm mixed with S. purpuratus ERB1 beads
D: S. franciscanus sperm mixed with beads containing no ERB1 protein
Based on the data in the graph, which of the following conclusions is supported?
#Question id: 10852
#Unit 10. Ecological Principles
The infective stage of a parasite's life cycle is the stage during which it
#Question id: 878
#Unit 1. Molecules and their Interaction Relevant to Biology
Can a peptide bind more strongly to an unfolded than the same protein in a folded state?
#Question id: 1044
#Unit 4. Cell Communication and Cell Signaling
Are all fungi detrimental (bad) for other organisms?
#Question id: 19191
#Unit 13. Methods in Biology