#Question id: 4564
#Unit 11. Evolution and Behavior
Who would have proposed that the boundaries between each stratum mark the occurrence of different localized floods?
#Question id: 1388
#Unit 4. Cell Communication and Cell Signaling
When Lucifer yellow, a small dye, is injected into a neuron of the retina, neighboring neurons become rapidly labeled. If the retina is incubated in dopamine prior to Lucifer yellow injection, only the injected neuron becomes labeled. These findings suggest which of the following?
I. Neurons of the retina communicate via gap junctions.
II. Dopamine is transferred between cells via gap junctions.
III. Dopamine decreases the permeability of gap junctions.
#Question id: 1371
#Unit 4. Cell Communication and Cell Signaling
A researcher was studying a protein ‘A’ which has been observed to move across cells when an extracellular electrical stimulus is provided. An artificial peptide ‘Z’ was prepared which resembles the structure of pannexins and competitively inhibits pannexon formation. Which one of the following statements will best explain the fate of protein ‘A’ if, the cells are treated with peptide ‘Z’ and then, electrical stimulus is provided.
#Question id: 3876
#Unit 3. Fundamental Processes
Which one of the following is not true of the mRNA for ovalbumin?
#Question id: 33338
#Unit 2. Cellular Organization