#Question id: 391
#1. Molecules and their Interaction Relevant to Biology
In a hospital laboratory, a 10.0 mL sample of gastric juice, obtained several hours after a meal, was titrated with 0.1 M NaOH to neutrality; 7.2 mL of NaOH was required. The patient’s stomach contained no ingested food or drink, thus assume that no buffers were present. What was the pH of the gastric juice?
#Question id: 3666
#3. Fundamental Processes
RNA-directed RNA polymerase, used in replication of some RNA viruses termed as:
#Question id: 4570
#11. Evolution and Behavior
Which pair would probably have agreed with the process that is depicted by this tree?
#Question id: 5025
#11. Evolution and Behavior
Which of these genetic processes may be most helpful in accounting for the Cambrian explosion?
#Question id: 5233
#11. Evolution and Behavior
The most important feature that permits a gene to act as a molecular clock is ________.