#Question id: 371
#Unit 1. Molecules and their Interaction Relevant to Biology
How many milliliters of a 2.0 M solution of boric acid must be added to 600 mL of a solution of 10 mM sodium borate in order for the pH to be 9.45? (pKa of boric acid = 9.24)
#Question id: 3908
#Unit 3. Fundamental Processes
Which of the following is correct?
#Question id: 4645
#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 given rise to the greatest number of species, both extant and extinct?
#Question id: 9188
#Unit 9. Diversity of Life Forms
Which of the following are examples or parts of plantsʹ systemic acquired resistance against infection?
#Question id: 15603
#Unit 12. Applied Biology