#Question id: 27100
#Unit 1. Molecules and their Interaction Relevant to Biology
#Question id: 53
#Unit 1. Molecules and their Interaction Relevant to Biology
Calculate the number of times the DNA of a modern E. coli cell has been copied accurately since its earliest bacterial precursor cell arose about 3.5 billion years ago. Assume for simplicity that over this time period, E. coli has undergone, on average, one cell division every 12 hours (this is an overestimate for modern bacteria, but probably an underestimate for ancient bacteria).
#Question id: 1609
#Unit 4. Cell Communication and Cell Signaling
Which of the following does the mononuclear phagocyte system NOT include?
#Question id: 11188
#Unit 7. System Physiology – Animal
Refer to the following graph of an action potential to answer the question.
The minimum graded depolarization needed to operate the
voltage-gated sodium and potassium channels is indicated by the label ________.
#Question id: 12896
#General Aptitude