IB Biology - Today was a massive data collection day! You got final masses on your tissue samples and also wrote down qualitative data such as floating or sinking, odors, disintegrating tissues, etc. When you come in tomorrow, I want you to be prepared with questions for our cell unit test. I'm passing on our 1.5 and 1.6 reading quiz and want you to really prepare for this unit exam so do not blow this off! The unit exam will be on Wednesday and you will do GREAT!
Honors Biology - Today we started by looking at he article I gave you on Friday. What a trippy weird idea that bacteria can produce proteins that literally embed themselves into membranes of our cells and then bust them open. Kind of scary really! We then do a group activity of membranes and prepared for another big quiz which is on cell membranes and how we get sick. Tomorrow you will be asked to write a CER (Claim, Evidence, and Reasoning) Paper. In this paper you must make a claim about how we get sick from bacteria and viruses and you must include the parts of a membrane as well as ways in which microbes attach and attack cells. You might also discuss sizes, and your evidence can come from many places such as the article we read, the video game we played online, or our microscope work, as well as anything you might find tonight. To score the maximum points possible you should include everything I've mentioned and use reasoning to show how they connect, but note that you will only have one class period to complete this so you should probably pick strong examples. Many people in the past have done an outline before you get to class. You are welcome to do this on the left side of the entry where we did the article. You are going to do great! ...if you prepare.
IB Biology - So today was your big unit exam review. I think we covered everything you need to know, but one way that you can make sure you get it is to try and think about how these topics connect. Some will connect better than others, but all of the concepts connect. When you come in tomorrow, I'm sure you will do well.
Honors Biology - Today we really only took our first big exam on cell membranes and how that relates to how we get sick. This is your first big chunk of points towards your grade and I think we've done well. Tonight, in preparation for tomorrow, I want you to simply ask yourself the question of WHY. Why do bacteria and viruses attack our cells? You don't need to write it down, but I do expect you to have it locked in your brain so I can ask you tomorrow. Be sure you have a response.
IB Biology - Today you took your first unit exam. I hope it was challenging but doable. You are all very smart, and if you have been applying yourself should do very well. In preparation for tomorrow we need be ready to move on to finishing your lab reports through the use of statistical analysis. SO, before tomorrow, be sure to have ALL of your data prepared. This means all quantitative and qualitative data is listed. You should also have % mass change calculated. If you want to get ahead of the game you could also look at the standard deviation for each molarity. We'll be using this as a description of error (error bars).
One last thing! I've already said it once, but I'll say it again, make sure your procedures reflect what we have done. This will be a major sticking point for me! The lab I gave you was meant as a model, not as something to copy.
Honors Biology - Today we picked up our work (the group packet) from Monday looking at how these cell membranes work. Tonight I want you to think about the following situation. If two men were lost in the wilderness and one was lost in the ocean, and one was lost in a vast freshwater lake. Who is in more critical danger? ...and more importantly, why? Your ideas should be written on a piece of paper to be turned in.
IB Biology - Today we reviewed our statistics in order to do the next step in our lab write up. To be prepared for the graph you will need to have percent mass change, mean percent change, and standard deviation for each molarity and tissue. If you just follow the sample I gave you last week you should be all up to date. Oh, but just leave the T-Test for later. BTW, I would highly encourage you to use a spread sheet.
Honors Biology - Today you submitted your ideas about yesterday's scenario. We discussed the ideas and why they had merit. Next, we decided to investigate this in a very real way, well, okay, we used little potato people and listed our factors on the right side of a new entry. These were placed into different solutions and we'll see what they are like after 24 hours. Next, we discussed the various things we know about water and how our scenario is different from real life. Lastly, we wrote down a hypothesis and rationale of what we thought would happen. This occurred on the left side of the entry.
Your job tonight is to think about the following questions. You will put your responses right underneath your hypothesis and rationale. The question is, "When is water VERY important to the body and why?" and secondly, "When is water VERY bad for our cells and why?"
IB Biology - Today was a special day where we learned the power of a spreadsheet! I believe that you are on the right track now. ....I believe. When you come in on Monday we should be able to calculate the last thing we need to do which is the Student T Test which our spreadsheet can do for us! ...if we have the right data. So, you should have figured out the mass change from initial to final, the mass % change of each sample, the MEAN mass % change, the standard deviation (for use with your error bars on your graph. Lastly, create a graph using the data. If you really don't get the math, please come prepared with your questions. We are behind the 8-ball right now and need to pick up the pace! We are going to fly through our next unit!
Honors Biology - WOW! Today we learned all sorts of stuff about water! We learned that you get have too much, too little, that cells can explode, and that water will help regulate our temperature, BUT ....why? Some of you told me about a process called osmosis. Some of you told me about solute concentrations. We talked about isotonic, hypertonic, and hypotonic solutions. We discussed the tragic radio game as well as the tragedy of the USS Indianapolis. And when we looked at the 2 potato people who were lost at sea/lake we realized that the lake person gained weight, and the ocean person had lost weight. But who should we save first? We still aren't positive, which is why we started the POGIL practice. We'll finish that on Monday, but until then I want you to try and answer a couple questions. Your answers will be written right under the homework from last night. !) Why can't we drink sea water? and 2) How do aquatic animals (fish, sharks, etc.) survive in an ocean or freshwater lake?
BONUS EDITION: The following are events coming soon. By attending these and taking 3 selfies with different signage and your watch in each picture, I'll give you extra credit!
1) This is the 40th anniversary Job Fair at Grossmont college on October 12th.
https://www.collegecentral.com/grossmont/Employer.cfm#events or https://sandiego.carpe-diem.events/calendar/7741915-40th-anniversary-career-expo-at-grossmont-college/
2) Men in Nursing Conference at Grossmont College on November 2nd. Registration link and more details coming soon!
3) Kids Care Fest Volunteering (community service hours!) on November 3rd from 9am-1pm at the Lemon Grove Recreation Center. I'll let you know about this one once I get more information.
This page contains nearly everything that you need if you missed class.