I was a bit disappointed by the level of surprise in class today about the test on Friday. I hand out the monthly syllabus for a reason: For you to know what is happening in class. I expect you to use the schedule, and not rely on me to tell you when things are happening. There should be no surprises when it comes to tests, quizzes, labs, or any other class activity.
I want you to use the syllabus for a few reasons. One, it makes it easier for me to plan. It should also make it easier for you to study, since you have a few week's notice of tests and quizzes. If you are absent from class, you can look at the schedule and see what we are going over that day. One of the most important reasons I do this is that this is what happens in a college course. You will get a syllabus at the beginning of the semester that lists all the tests. You will be expected to know when they are. The professor/instructor may not remind you that they are coming.
Please use the syllabus. There is one posted in the classroom, and I can get you another copy if you lost yours. There are two more quizzes on the syllabus for this month. Make sure you know when they are. I may not remind you in class about them.
Anyway, here is the complete PowerPoint for Chapter 22. I will be moderating comments till 10.30 tonight.
5 comments:
can you explain evolution of drug resistance a little more
sorry Dr. H! =) thank you for the syllabus!
and what is the format of the test?
@ Vikram
In any population, there is natural variation between individuals. In a population of bacteria, for example, there will be some members that are susceptible to an antibiotic, and other members that are resistant to it.
If you expose this population to antibiotic, the susceptible members will die off, leaving only the resistant individuals. The population as a whole has evolved to be more drug resistant than the original population before exposure to the drug. The drug resistance was always present, but exposure to the drug caused the resistance gene to become more common.
This happens in any population, not just bacteria.
@Pooja
The test is 30 multiple choice and two short answer questions.
By the way Dr H, my dad showed me this article and I thought it was interesting. It mentions natural selection and gives examples of how eyes in animals serve the same purpose but are structurally different - analogous structures? - so i wanted to post it but didn't know how.
http://today.msnbc.msn.com/id/10075854/
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