Q1. Scientists are studying bacteria discovered the sea floor. In the absence of light, these bacteria can use organic molecules (including human waste) to generate electricity. NASA hopes they might one day be useful in producing some electricity on a spacecraft. What mode of nutrition do these bacteria probably use?

Q2. A cell biologist cautiously measured the quantity of DNA in grasshopper cells growing in cell culture. Cells examined throughout the G2 phase of the cell cycle contained 200 units of DNA. What would be the quantity of DNA at G1 of the cell cycle in one of the grasshopper daughter cells?