You are studying a novel species of Eukarya that can be found in ocean sediments and you find that it has a generation time of 45 minutes, dividing by binary fission. If you start with a population of 200 cells in a culture, how many cells will there be after 3 hours of incubation? Show your work or explain your answer. 

Many bacteria and archaea can fix nitrogen. This process uses [answer1] to produce [answer2]. The product is used as a(n) [answer3]. 

True/False. Photoautotrophs use carbon dioxide for their source of carbon, but chemoautotrophs do not.

Geobacillus stearothermophilus is a thermophile. What would happen to the cell membrane if a culture of this bacterium was moved from a temperature of 65˚C to a temperature of 20˚C?

Halotolerant and halophilic organisms can both survive and sometimes grow in the presence of elevated salt levels. What is one accurate statement about these two types?

Many bacteria and archaea can fix nitrogen. This process produces [answer1] from [answer2]. This process is a(n) [answer3] of the nitrogen.

Bacteria differ from eukaryotes in that they have no nucleus, mitochondria or ribosomes.

You are studying a new virus and have established a method to grow it in the lab using a monkey cell line. After some time, you find that you can consistently detect viral nucleic acids inside infected cells, but you cannot detect any viral particles produced. This most likely indicates that

The following is a picture from an online biology textbook. What main feature discussed in class is missing from the gram-positive cell diagram? This is a fill in the blank question, please only type the name of the missing component.

Protein secretion systems are needed in part because proteins are too large to pass through the membrane on their own.