I grade about 150 papers each week and sometimes it helps to get unintentionally funny answers.
Q: What is the area of this bacterial colony?
A: 18 hours (underlined, too)
Q: What is the diameter of this bacterium?
A: 3 micromolar
Q: How many bacteria are there in this colony
A: 10^-7 (yes, fractional number of living things. w00t!)
Q: Define recombination
A: A process by which chromosomes exchange information with each other (Facebook for bacteria. EM profile pics, anyone?)