#Question id: 11330
#10. Ecological Principles
Bio geographers have noted that the tropics have more terrestrial species than temperate regions. Which of the following is NOT a plausible explanation for this pattern?
#Question id: 1091
#4. Cell Communication and Cell Signaling
Why does testosterone, a lipid-soluble signaling molecule that crosses the membranes of all cells, affect only target cells?
#Question id: 4378
#3. Fundamental Processes
This serves as the promoter for 70% of eukaryotic genes and typically serves as a control region for genes that are transcribed at relatively low rates.
#Question id: 9192
#8. Inheritance Biology
The oak tree pathogen Phytophthora ramorum has migrated 650 km in ten years. West Nile virus spread from New York State to 46 others states in five years. The difference in the rate of spread is probably related to
#Question id: 5840
#8. Inheritance Biology
The sequence of proteins used in bacterial recombination is