#Question id: 3832
#Unit 3. Fundamental Processes
You briefly expose bacteria undergoing DNA replication to radioactively labeled nucleotides. When you centrifuge the DNA isolated from the bacteria, the DNA separates into two classes. One class of labeled DNA includes very large molecules (thousands or even millions of nucleotides long), and the other includes short stretches of DNA (several hundred to a few thousand nucleotides in length). Which two classes of DNA do these different samples represent?
#Question id: 3047
#Unit 2. Cellular Organization
A rapidly growing bacterial species such as E. coli exhibits a typical phase of growth cycle in liquid nutrient broth. If a bacterial culture has starting density 1000 cells/ml in log phase and after four hours cell density is 4000 cells/ml. What is specific growth rate per hour?
#Question id: 5829
#Unit 8. Inheritance Biology
Transitions are base pair substitutions where:
#Question id: 2403
#Unit 2. Cellular Organization
In autotrophic bacteria, where is chlorophyll located?
#Question id: 11103
#Unit 7. System Physiology – Animal
A key mechanism of gas transport through the tracheal system is