#Question id: 23453
#General Aptitude
#Question id: 359
#Unit 1. Molecules and their Interaction Relevant to Biology
What is the concentration of OH− in a solution with an H+ concentration of 1.3 × 10^−4 M?
#Question id: 11157
#Unit 9. Diversity of Life Forms
Typically, mutations that modify the active site of an enzyme are more likely to be harmful than mutations that affect other parts of the enzyme. A hypothetical enzyme consists of four domains (A—D), and the amino acid sequences of these four domains have been determined in five related species. Given the proportion of amino acid homologies among the five species at each of the four domains, which domain probably contains the active site?
#Question id: 6946
#Unit 5. Developmental Biology
The adult body plan of the fly is based on reiterating structures called segments; segment precursors (parasegments) are first positioned at the cell-by-cell level by which group of genes?
#Question id: 3277
#Unit 11. Evolution and Behavior
Which of the following describes the most likely order of events in allopatric speciation?