*The Cell Cycle*

We always learn something new in Mrs. Stein's classroom every day.

Since today was late arrival with thirty-five minute classes, the class began by walking in, picking up a sheet and a picture, and sitting down. The sheet was our homework, and the picture was to tape into our notes. After organizing ourselves, Mrs. Stein asked for everybody to have their stamp sheet and their Estimation of Cancer Risk Graph located in the UP packet (55). Continuing the morning, Mrs. Stein had notes on the Smart Board for everybody to copy down - there is a picture of them on the left of this scribe. The notes were on the Cell Cycle and basics about it. The cycle has four stages, in which chromosomes take place. The cycle consists of: Interphase (G1), S Phase, G2, and the M Phase. Cells undergo these stages in order to grow, replicate, prepare for mitosis, and finally, divide. Chromosomes are in the cell, and they are the ones that do the jobs. After taking notes for about twenty minutes, we were allowed to work on our Mitosis (65) Worksheet. We had to annotate, and on the back, color the appropriate structures the appropriate color. Since that was fifteen minutes, the bell rang and class
was over. We walked out with our heads filled with science and looking for tomorrow.

HOMEWORK:
1) Annotate the Mitosis worksheet (with notes in the margins!), and color code the back.
2) Start Cancer research.
3) Cancer essay due 10/25.



















The Homework. ^ ...... >

Enzyme Lab

{Sorry this post was kind of late guys...but my computer was having trouble connecting to Moodle}

Agenda:
Enzyme Lab
UP pg. 24-32
turned in UP pages 36 & 37
got a stamp for Enzyme Pre-Lab wrksht

Homework:
Enzyme Lab due Tuesday
Read 10.2 & 10.3 by Tuesday
(do a Flow Map titled "Cell Cycle" on 10.2)
[Flow map available on Moodle]


In class on Friday we talked about the Enzyme Lab that we were going to begin that day. We discussed that the beaker of water that served as the "water bath" had to stay at the temperature you were given and it was supose to be like a practice test just to observe what happens. Afterwards we did the trial with the assigned temperature we were given which was either 0, 15, 22, 37, 55, 0r 100 degrees Celsius. My group was assigned 15 degrees Celsius, and we were also suppose to do the trial a multiple number of times and then record our data.

Also in class Ms. Stein showed us an example of the lab we did. She poured hydrogen peroxide in a graduated cylinder and then added potassium iodine to cause close to the same reaction as our lab. It was really cool to see because the hydrogen reacted so furiously to the potassium that it overflowed an extreme amount into the plastic bin it was in.

Te next scribe is Mirella

Plasmolyzed Cell Lab!

Agenda:

1. QUIZ!

2. Bring up 34-35 with stamp sheet

3. Discuss diffusion lab and osmosis in cells

4. Discuss pH enzymes and tomarows lab

5. Plasmolyzed lab (UP 36-37)

Homework:

1. Finish Plasmolysis lab (UP 36-37)

2. Prelab for enzyme lab:

a. Use section 2.4 in textbook for extra help

b. Lab on UP 24-30

When we first got to class we took the quiz. After that we got our stamp for the diffusion lab. Next, as a class we discussed the diffusion lab and answered any questions we had. Mrs. Stein then explained how osmosis in cells works. She explained that a cell might have 99% water and 1% salt in it, while its in a puddle of 6% salt and 94% water. If this happened then the cell would get rid of all the water in it because it moves from high concentration to lower concentration. When this happens, the cell membrane gets smaller and squeezes all the chloroplast into the middle of the cell. Then we witnessed this for ourselves by doing the Normal and Plasmolyzed Cell lab. We ended the class by working on the Analysis questions. If you dont understand this read page 211 in the textbook.

Plasmolyzed Elodea Plant Cell (in salt water):

Elodea Cell (in tap water):

The next scribe will be: Gabby

This is Jordans Blog

In Biology class today, we started off with Turning in our Cornell notes which were due today for homework. Then, Mrs. Stein checked in page 14 in our packets and gave us a stamp if we had it completed. We then went over page 14 and that led us into taking notes. These notes were over the main ideas of food chains, energy flow and the biosphere. We received this piece of paper that helped us better understand producers and consumers.
(sorry the picture is blurry) After taking our notes, we jumped into an activity on page 19 of our packet. We had to answer questions about food chains, webs and biomass pyramid.
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Tonights homework is the finish your Rip-O-Meter lab write up and read section 3.3 and complete the “picture this” strategy. To get to the “ Picture this” strategy, go on to to the biology page on moodle and go to Reading Strategy Resources. I believe it is the first one.
The next scribe is Angel.

Lab Write Up

One of your classmates emailed me about the physical layout for the lab writeup format.... below was my response!
 
 
My Wonderful Lab Report

 

8/31/10

 

Purpose: The purpose was to figure out how this determines that.

  

Introduction

This should be a short paragraph...

Materials

• Stuff
• Things
• 4 Doohickies

Procedure
1. Get the stuff
2. Add the thing

3. Mix the doohickies

 

Variables

Independent Variable - color of stuff
Dependent Variable - number of doohickies
Controlled Variables - temperature, size of doohickies, mass of things

Safety

Don't poke your eyes out with the stuff. Don't swallow the doohickies.

 

Results and Analysis
TABLES, GRAPHS, and a paragraph for analysis

 

Conclusion
3 paragraphs

 

Wednesday, September 1st, 2010

We began today's Bio class by going over the Rip-O-Meter pre lab questions which were graded and returned. We briefly discussed tomorrows quiz, which is on unit 1 and microscope practical. The format of the quiz is multiple choice questions and maybe written answer section. Finally, we finished the class by completing the microscope lab UP 33-37. The homework that was given today:

Homework:

1) UP 33-37 (Due: Thursday)

2) Quiz Tomorrow ( Unit 1 and Microscope Practical)

3) Rip-O-Meter Lab Write Up (Due: 9/8)

4) Visit Mrs. Stein for HW pass by 9/4

Next person to blog: Delia

Rip-O-Meter/Microscope

During today’s Bio class, we continued to work on our Rip-o-Meter lab. Most of the class has gotten to the conclusion of their lab and were advised to move forward to the Microscope lab. However, most tables finalized their last calculations just before the bell rang and were un-able to proceed on-ward. And as always, Mrs. Stein, did indeed, play country music. The homework that was assigned for tonight was as followed:

-UP 33-37 (due Thursday)

-Rip-o-Meter Write Up (due 9/8)
-Quiz on Thursday
-If you need a HW Pass, See Mrs. Stein before 9/4


For further info please see Mrs. Stein before school or email her for more details.

The next scribe is Adrian

Monday - Rip-O-Meter Lab

In class on Monday we first came into the classroom and went over the agenda and homework for that night. The homework that was due for today was to read section 1.1 and came up with the 6 types of questions, and to gather leaves for the lab that day. We handed in our homework in the bin, and went to our lab stations to complete the Sample Experiment part in the packet which was pages 24, 25 & 26 based on the sample given us. Once our group finished, we pulled out the page and also turned it into the bin. After, we spent a few minutes trying to determine the names of our leaves. By then we were ready to start the lab. My group tested leaves by size, and so far we noticed that the bigger the leaf, the more pennies the cup will hold. Towards the end of class, we completed page 27 in our UP packet, asking us what the matierals, procedure and variables were for our specific experiment. Although we didn't all finish the experiment, Mrs. Stein did remind us of a few things before class ended. She told us that if we didnt understand the homework and didnt do well on it, or just never handed it in then we should ask to make an appointment with her for a homework pass before September 4th. She also reminded us that if we were having any problems with moodle, email her.


The homework for Monday night was:
-Read appendix B A-14/ A-15
-Quiz Thursday
-Rip-o-meter write up- 9/9 (UP pages 31-32)
and virtual microscope that you can find on moodle.


This was Mondays blog....I dont know why it wasnt working!

The next scribe is Evan

Friday's Class

August, 27th

On class Friday we started off discussing our first scribe post and completed "a star and a wish" on it. We then went over the homework (p.9, 10, and 19-21 in our unit packet). We reviewed what variables, a control group, and a hypothesis are. Mrs. Stein later told us that we would be able to get a homework pass if we stopped by and let her get to know us and vice versa. Later we were introduced to our next lab the "rip-o-meter lab" in which we test how much weight a leaf can hold before it tears, we were told that we should bring leaves in on monday so that we could start the testing. At the end of class we were assigned the homework which was reading section 1.1 and writing six types of questions and answers on the material and to bring in leaves for our lab.

The next scribe will be Gianna.

Virtual Microscope

http://virtualurchin.stanford.edu/microtutorial.htm

First Two Days of School

Wed. Aug. 25th


Today in biology class, we talked about what science is. some ideas were the study of nature, something you can prove, the study of everything, and questions we ask about stuff. We also talked about what a hypthesis is. some answers for that were an educated guess, if this happens then this will, and an opinion on something we observe. After that we tested hypothesises by doing what is called milk lab. We took a bowl of milk and dropped four different colors of food dye in it. we the dipped toothpick in to see what would happen. we then did it agian this time putting dish soap on the toothpick. and again with a lot more soap and held it ther for a minute. before each of these steps we made a hypothesis on what would happen. by then the class was almost over so we filled in all the analysis questions we could before it ended.


Thurs. Aug. 26th

on our second day of Bio, our teacher told us more about what we were going to be doing throught the year. after that we got everyone set up on the school computer system and got set with moodle. of couurse ther was some confution getting set up so that took a while and when we finished there were a few minutes left were we watched a few videoes on internet saftey. then almost as soon as the last video was done the bell rang ending class.

The next scribe is Zoe