While working with Staphylococcus bacteria in 1928, Sir Alexander Fleming accidently dropped some bread crumbs on one of the dishes. After a week the bacteria on this dish did not grow as expected. Fleming noticed a bacteria-free circle around a mold that was contaminating the staphylococcus culture. Instead of throwing the dish away because the planned experiment had failed, he isolated the mold, grew it in a fluid medium, and discovered a substance that prevented growth of the bacteria even when it was diluted 800 times. Discuss the discovery of penicillin using the terminology and issues introduced in this chapter.
What will be an ideal response?
This is an example of redefining project goals. The initial experiment of Fleming failed, as he contaminated the petri
dish. However, Fleming recognized that he discovered a substance that was much more significant than the original
experiment.
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In principle, recursion is never necessary. It can always be replaced by an iterative construct, such as while or until. Rewrite makepath (page 1066) as a nonrecursive function. Which version do you prefer? Why?
What will be an ideal response?
When using wildcard characters in a query, a charlist in the criteria of a field will allow you to use a group of one or more characters enclosed in parentheses
Indicate whether the statement is true or false
Jacob wants to set up extra security on his wireless network; he currently uses WPA2. He wants to allow only his devices to connect to the network and reject devices that he does not own. What extra wireless security should Jacob employ in on his wireless router?
A. WPS B. Port forwarding C. Disable SSID broadcasting D. MAC filtering
To set row height to best fit, _________________________ the bottom boundary of the row heading.
Fill in the blank(s) with the appropriate word(s).