Exam 4: Bacterial Culture, Growth, and Development

If you determined the number of cells in a sample using viable plate counts and optical density measurements, why would the results from the two methods be so different?

During biofilm formation, as more and more cells bind to the surface, they begin sending signals to each other in a process called:

What causes an organism to go through the process of sporulation? How can endospores cause problems in the food industry?

When the population doubles during each given unit of time, the growth is:

Compare and contrast the ABC transporters and group translocation in terms of energy requirements and concentration gradients.

Microorganisms constantly struggle to survive in natural habitats because of the competition for:

Why can't most organisms use the nitrogen gas that is so prevalent in the atmosphere? How do these organisms acquire a usable form of nitrogen?

Some bacteria form environmentally resistant forms called:

All of Earth's life-forms are based on:

Which of the following is the best technique for counting only viable cells?