#Question id: 2571
#Unit 2. Cellular Organization
While examining a rock surface, you have discovered an interesting new organism. Which of the following criteria will allow you to classify the organism as belonging to Bacteria but not Archaea or Eukarya?
#Question id: 4341
#Unit 3. Fundamental Processes
Suppose an experimenter becomes proficient with a technique that allows her to move DNA sequences within a prokaryotic genome. If a researcher moves the promoter for the lac operon to the region between the beta galactosidase (lacZ) gene and the permease (lacY) gene, which of the following results would be most likely?
#Question id: 11726
#Unit 6. System Physiology – Plant
SPY acts upstream of GAI and RGA in the Gibberellin signal transduction chain, what is the role of SPY?
#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: 107
#Unit 1. Molecules and their Interaction Relevant to Biology
Ethanolamine, serine and choline can be cleaved from glycerophospholipids by treatment with