#Question id: 11983
#Unit 10. Ecological Principles
#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: 1763
#Unit 4. Cell Communication and Cell Signaling
Which of the following cytokines can mediate release of acute phase proteins from the liver?
#Question id: 3557
#Unit 8. Inheritance Biology
What was the most significant conclusion that Gregor Mendel drew from his experiments with pea plants?
#Question id: 699
#Unit 1. Molecules and their Interaction Relevant to Biology
The three-dimensional conformation of a protein may be strongly influenced by amino acid residues that are very far apart in sequence. This relationship is in contrast to secondary structure, where the amino acid residues are: