Name: _________________________

Bio 351 Homework #3

Use the article: Relationship Between Maternal and Neonatal Staphylococcus aureus colonization

DUE: Monday January 29th at 11PM on Blackboard

1. What was the purpose, and justification for this research study (you will find this information after reading the introduction. You do not need to read the entire article)? If you include scientific jargon that the article uses, then I want you to explain to me in your own words the meaning of these terms. (2.5 points)

2. What were the results from Figure 1? (1.5 points)

Use your textbook, and lecture notes to answer the questions below (3 points each):

3. From your knowledge of Gram-positive and Gram-negative cell envelopes, why would penicillin be more effective in killing Gram-positive organisms than Gram-negative organisms?

4. Why is moist heat more efficient at killing microbes than dry heat? How does an autoclave kill microbes so efficiently?