#Question id: 4360
#Unit 3. Fundamental Processes
Which of the following functions are characteristic of general transcription factors in eukaryotes?
#Question id: 4647
#Unit 11. Evolution and Behavior
The treeʹs horizontal axis is a timeline that extends from 100,000 years ago to the present; the vertical axis represents nothing in particular. The labeled branch points on the tree (V—Z) represent various common ancestors. Letʹs say that only since 50,000 years ago has there been enough variation between the lineages depicted here to separate them into distinct species, and only the tips of the lineages on this tree represent distinct species. Which of the five common ancestors, labeled V—Z, has been most successful in terms of the percent of its derived species that are extant?
#Question id: 23859
#Unit 13. Methods in Biology
#Question id: 2019
#Unit 4. Cell Communication and Cell Signaling
Which of the following is not a component of an insectʹs defense against infection?
#Question id: 1751
#Unit 4. Cell Communication and Cell Signaling
Which of the following is characteristically produced by the Th2 CD4 cells which provide help for antibody production, but not by Th1 cells?