Part 1...While about to go surfing, you notice that the water has a nice reddish
ID: 13560 • Letter: P
Question
Part 1...While about to go surfing, you notice that the water has a nice reddish hue. You are worried about accidentally ingesting some of the prokaryotic life that comprises the life forms that make the water red, so you take a sample of the water and run a test. From the results of the test, you are excited to see that you can probably surf without worrying about getting too sick (even though you probably should still not surf). What did the results say about the bacteria, and what do the results mean?1. The results show that the bacteria is gram positive; the bacteria's cell walls are more complicated.
2. The results showed that the bacteria is gram positive; if you get sick, you can likely be treated with anti-biotics.
3. The results that the bacteria is gram positive; the bacteria's walls have very little peptidoglycan.
4. The results showed that the bacteria is gram positive; the bacteria are more likely than gram negative bacteria to be resistant to anti-biotics
5. The results showed that the bacteria is gram negative; if you get sick, you can likely be treated with antibiotics.
Part 2...Which of these choices best or most accurately describes commensalism?
Answer
1. A fish removing creatures from a whale's body.
2. The E coli bacteria living in your gut.
3. A bird leaving its eggs in another bird's nest.
4. A bee pollinating a flower.
5. Bacteria living on your skin, devouring dead skin flakes.
Explanation / Answer
Answer: Part 1: [2] Gram-positive is a purple color staining result that shows that the bacteria has more peptidoglycan. It trapped the stain inside the cell and hence shows that antibiotics may be more effective towards treating it if it was dangerous. Part 2: [2] The E. coli gets a nice habitat to live in and doesn't really affect the person in general (unless if its a dangerously toxic strain version of E. coli).