First of the 2nd round!

TRENTON HERE!!

During the start of class we turned in our quiz corrections from over the weekend if necessary. Then Mrs. Stein gave us another DOD (disease of the day), which happened to be Malaria. The agent of disease was protozoan (protist). -------------------->

During the remainder of class we all got into our groups to attempt

to finish our lab. After the incubation time our group found various bacterial colonies have formed. We also discovered how the antibiotics were holding up the bacteria. What our group (Anthony, Jarod and myself) found was quite queer (British term). Number 3 indicated many bacterial colonies, that was all on the screen of my phone 0_o (everybody loves my phone don't they). Don't forget to do the tree map due Wednesday!

Here is the format for the tree map:

HERE WERE OUR RESULTS..................................

JAROD is our next scribe

and the last scribe goes to...

Hii everyonee its Tessa N! WHOOOO LAST SCRIBE. (thisss is gonna be the best one yet nbd) Okay so, we started off class handing in our double bubble maps of bacterial disease VS. viral disease. Bacterial disease produce toxins and may be treated with antibiotics. Some examples of bacterial disease are staph, lyme disease,meningitis (hope i spelled that right) and strep throat. Viral disease may be treated with antivirals, cannot be treated with antibiotics, may lead to cancer, damages DNA, the lytic cell will burst, and it disrupts the cellular process by hijacking the normal function of cells.Some examples of viral disease are HIV/AIDS, influenza, polio, and smallpox. Bacterial disease and viral disease both evolve rapidly, attack and destroy cells, disrupt homeostasis, are prevented by a vaccine, are caused by pathogens, reproduce rapidly, and are preventable in the same ways. Thennn... we took about 5 minutes to discuss our muddiest points with our neighbors, talking about the things we were confused about from the homework. Then, we had about 10 minutes to ask questions for the quiz we were about to take. Finally, we took our quiz! We had about 20 minutes at the end of class. It was mostly multiple choice, with two fill in the blank, and two short answer questions. It was on all of 20, and section 33.1- mostly about viruses, bacteria and diseases. I hope everyone did great ! Welll... that's it! I hope I see everyone bright and early at 5:00 am tomorrow... lol i can't wait for the pep rally, it's gonna be great!(:

Bacteria

Hey guys, it's Maggie!

Today in class we went over quite a few slides on a powerpoint; mostly about bacteria. We learned the "Classification of Prokaryotes", which includes eubacteria and archeabacteria. We went over the three different shapes of bacteria. These include: bacilli (rod-shaped), cocci (spherical), and spirilla (corkscrew). Last but not least, we learned about binary fission and conjugation. Binary fission is when the DNA replicates and the cell divides in half. Cojugation is when a cell exchanged genetic material across a hollow bridge to another cell. At the end of class, we watched a movie that talked about fatal bacteria including anthrax. We have a quiz tomorrow so I hope everybody studies!

SCRIBE OF THE DAY YAY

Hi it's Catie! I'm the scribe of the day today! WOOOO!

Alright, so today in class, the first thing we did was turned in our cancer papers. I hope we all did well! After that, we discussed the lab we did yesturday. Turns out, MR PAEK was the instigator of the disease. ED was the one and only carrier of the disease. Silly old Ed!

After this, we discused VIRUSES. Viruses are interesting little creatures. Well, actually, they aren't creatures at all; they are NONLIVING, because they do not have all of the traits that scientist say make a thing living (CELLS are the smallest unit of life, not viruses!).

A protein coat, called a CAPSID, surrounds a virus. Viruses are sneaky little things. A virus uses its proteins to 'trick' a cell to take in the virus/its genetic material. (Speaking of which, a virus's genetic material consists of DNA/RNA.).

A virus can ONLY reproduce within a host cell; it can NOT divide on its own. Viruses are PARASITES, because they exist off of an organism and harm the organism while doing so. There are two cycles of a virus entering a host called the Lysogenic Cycle and the Lytic cycle. In the lysogenic cycle, the virus enters a cell and the viral DNA integrates into the host's DNA. Then, the host cell replicates WITH the viral DNA. From there, more and more virus cells get created! The lytic cycle is very similar, except for an important part. In the lytic cycle, the cell EXPLODES!!!!!!!!!!!!!! and the viruses are let out and spread quite rapidly to other cells.

In other words: Cell go boom = Virus get spread.

After discussing viruses, we were going to watch a video. But 8th period jitters got the best of us again, so we didn't get to watch the video yet. :( But don't worry folks, we will watch it next time!

BIOLOGY RULES!!!!!!!!!!!!!

Ok bye!

Next scribe is.. Maggie :)

The first and last...Monday, October 24th of 2011!

Alright soooo todayy we startedd of class by takingg a quiz on 10.1! (eww) Then went on to talking about Epidemiologist which is a person who studies infectious diseases. After that we watched a short five minute clip about how a pump caused a Cholera outbreak. Then we finished of class with a fun lab that helped us "investigate" who was the carrier and who caused the sickness at the wonderful school of Glenbrook SOUUTHHH! Alright ya'll have a good night! See ya tomorrow!

Next scribe...catie :)

Da Scribe of Da Day!

So we started off today by getting our tests back and then went into some notes on INFECTIOUS DISEASES VS. REGULAR DISEASES. We also started the beginning of our new unit on diseases and learned about deadly pathogens that get inside our immune system and harm us, and also viruses. We were also introduced to the Disease of the Day in where we will be investigating a disease for homework every day, or usually every day. We then found out Ms. Stein is GOING TO HAVE A BABY! Congratulations Ms. Stein! We ended with a short video that we will continue next class that had to do with a doctor named Semmelweis that had to convince his other fellows to wash their hands!               NEXT SCRIBE IS Shaaaaaaaaaaaaaaaaaaaaaaaaaannnneeeeeeee.

/\/\udd!3$+ P0!n+. H3LPPPP !!

Anyone on this site hiiiii its tessa. ok so i don't really understand the cell cycle... what does each cell look like? that big bird stamp sheet totally confused me haha, I made BenS do all the work. i've trieed so hard to memorize them but it just doesn't stickk... ANY ADVICE?

A video about the phases of mitosis. It might seem long and boring, but hey, he's indian, im pretty sure he knows what he's talking about

My Dirty Point Of Muddiness.

My muddiest point is about enzymes. Like I know that they are catalysts with protein that speed up chemical reactions but can someone further explain this or like exactly what catalysts are?

Cell Cycle Extra Credit!

Hey Guys... this is a REALLY fun game about the cell cycle... I hope you enjoy it! Click on this link to play it. WHO is the "Cell Division Supervisor" who is controlling everything in the game? First 3 people to EMAIL me the answer will get EXTRA CREDIT! Enjoy!

Here's what went down today!

Here's what went down today in Mrs. Stein's 8th period bio class! We took notes on 10.3 which was all about regulating cell cycles. We learned that cyclins were the proteins that regulated the cycle. During interphase, they signal spindle information. How exciting! 2 types of regulators are INTERNAL REGULATORS and EXTERNAL REGULATORS. Internal regulators check the cell and make sure the cell is ready for mitosis. It's giving it approval, like the "Go ahead!" External regulators speed and slow down cell division.

We learned that the causes of cancer are:

*Carcinogens (cancer-causing chemicals)

*Mutants ( DNA overproduce growth factors)

*Some viruses (they mess with your DNA)

After we took these fantastic notes, we got in our lab groups and make sure our big bird stamp sheets were finished. Then the bell rang!

stuck in the mud

I feel pretty good about this section but the one thing i don't understand is if each individual cell has a different pace at which it reproduces or if the same type of cells all reproduce at the same rate

Muddiest Point

Ok, I understand most of the things from this chapter, except for the stuff about ATP and ADP... I don't know what the difference is!

I know that they are sourced of Energy, but that's it! So can someone please tell me what they do?

MUDDY BUDDY

My muddiest point is about the chromosomes. Im kind of cunfussed about all the differnt things they do, especially during mitosis when all the confusing names come along (chromotin, chromatid, they all sound the same!)

Hey point get out of the mud!!

Hey its Jarod. My muddiest point would have to be the difference between chromatin and chromatid. they both sound the same and look the same. help me.

HELP HELP HELP

I cannot understand this! So, my muddiest point is the function and importance of enzymes in a living cell. How do enzymes impact a living cell? I know they are not living things, they are basically things that do certain jobs in a cell, but what are their jobs and functions?
-Eunice :]

Muddiest point

My muddiest point for this unit is memorizing what happens in the cell cycle. I know what happens during interface, but no visually. This is the same with mitosis.

Point Of Muddiness!!!!!

Hiiiiaaaa!!!! It's SarahL!!!! YAY so my muddiest point is that i'm confused with the difference between G1 phase and S-phase it's hard!!!! HELP MEEEE! thanks ya'll!!!

MUDDIEST POINT!?!? NOT AGAIN!

Hey it's jon, and my muddiest point is that it is really hard for me to memorize all the different organelles of all the different cells there are!! NEED HELP PLEASE!

DID YOU SAY MUDDIEST POINT!?

Hey Period 8! Rachie here :) I think my muddiest point this unit was naming the orangelles that the plant cells had and the animals didn't, and vice-versa. HELP!

Cell Cycle

Hey guys, it's Eunice Lee :D


Today in class we searched for phases of Interphase and Mitosis in an onion cell. We also counted how many cells were in different phases!

In Interphase there is the G1, S, and G2 phase.
In G1, the cell does most of it's growing.
In S-phase, the DNA is replicated and there is twice as much DNA.
In G2, organelles are produced and the cell prepares for the M phase, or Mitosis.

In Mitosis there is Prophase, Metaphase, Anaphase, and Telophase.
Prophase is the longest phase, the nucleus condenses and the chromosomes can be seen. Then, the spindle starts forming.
Metaphase is the shortest phase, the chromosomes gather in the center of the cell and line up. The middle of the chromosome is the centromere which are connected to spindle fibers.
Anaphase, the chromosomes are separated and move to the ends of the cell by the spindle fibers.
Telophase, the chromosomes spread out and the nucleolus starts to form in the cell.

Also remember to post your Muddiest Point by MIDNIGHT!
And Comment on a post before MONDAY BY MIDNIGHT!

Have fun at Homecoming :)

Next Scribe is Kara

MUDDIEST POINTT!!!

Hai guyss!! Its HEIDI!

My what muddiest point is........what specific things happen in each phase in mitosis & how they are supposed to look like.

Metaphase, Anaphase and confusion. O MY!

What is the metaphase and anaphase? arnt they kind of the same thing?

Mie schmutig punkt! :)

Hey guys!! If you didn't know the title is "my muddiest point" in German! Haha! But alright so I am confused on what helps during cell division, and what organelle converts energy from sunlight into chemical energy! Help! Thanks!!

El point de muddy

Along with my spanish, my muddiest point might have to be about osmosis. Help por favor!

The phases of the cell, say what?!

Why hello there, Anka here! My muddiest point is the difference between each CELL PHASE. What is one characteristic of each phase that distinguishes them from the others? Thanks a lot guys! (:

My Muddiest Point

My Muddiest Point in the cells unit was that I did not know the difference between the nucleus and the nucleolus and where they are located. If anyone could help that'd be great!

Mudiest point

Hey this is mike and the thing a have the most trouble with is the visual difference between E.R and the golgi apparatus.

Muddiest Point

Hi, Eunice Lee here.
I think my muddiest point is Osmosis. I don't understand it completely, any help? :(

MUDDIE POINT

hey its kelly

so my muddiest point from the unit was knowing the difference between the rough & smooth ER & what their functions are

muddiest point

hiii its eleni and so far im really confused with all the different phases. i get that there is a bunch of different ones during mitosis but then there others outside of mitosis and i don't get what all those ones are/do. i know this is kinda general but if you can help me that'd be great!!!

Like a deer in headlights #2

Hey! Its Kara, and my muddiest point is this:

• What phase does the chromosomes condense into chromatin?
• and when we look at the mitosis diagrams, are we looking at the WHOLE cell, or a zoomed in form of the NUCLEUS?

Thanks!

My muddiest point. (Trenton)

Hello, my muddiest point is.........what is polymerization?

Any help? The text book doesn't describe what it really is (the picture is the only source).

MITOSIS

HI guys! It's Heidi!!

So, today we had a little activity that had to do w/MITOSIS, which is the division of cells, were we had little cut out squares of the steps in MITOSIS, and had to put it in order from the 1st step of MITOSIS to the last.

HERE'S A VIDEO ABOUT MITOSIS THAT WILL HELP YOU

UNDERSTAND MORE ABOUT IT ----->

http://www.youtube.com/watch?v=VlN7K1-9QB0&feature=email

We also talked about our CANCER PROJECT, and what the difference between BIBLIOGRAPHY (a separate sheet of paper w/alphabetized sources) & CITATIONS AND APPROPRIATE USE OF RESOURCES (in parenthesis within the text itself) are.

CANCER PROJECT IS DUE ONE 10/25/11.

*REMEMBER TO DOUBLE SPACE & NOT TO LIST THINGS!!!

Mrs. Stein talked about https://turnitin.com/static/index.php as well and how to create our student account, which is due on FRIDAY!!!!

THE NEXT SCRIBE IS............EUNICE LEE!!! :D

OSMOSIS

Hey guys its kelly

so today in class we reviewed the plasmolyzed cells lab & the enzyme lab

we also talked about OSMOSIS which is the process in which water DIFFUSES through a semi permeable membrane & how things go from high to low

then we went to the library to take surveys for our risks at getting certain types of cancer(which we had to finish for homework)

http://www.yourdiseaserisk.wustl.edu/hccpquiz.pl?lang=english&func=home&page=cancer_index

the next scribe is HeidiH

Enzymesss!!!!!!!!!!!!!!!

Hey ya'll it's Sarah L here with your newest scribe post!!!! YAY!!!

So in our wonderful biology class today we did a.... LAB!!!! It was sooo much fun and very cool to watch!.

In our procedure we first started to heat water to the decided temperature for you group (my group was 100). Then we marked twon lines one for the catalase (which is an enzyme that speeds up the process of chemical reactions!!! Ooo Ahhh

When we were done setting up it was time for the dirty work... So we filled the catalase to the first line of the test tube and we placed it in our water at the correct temperature of course, then waited ten minutes for results.

After ten minutes we checked the temperature to record it, then we took the tube out and put hydrogen peroxide into the tube to the second line. Then, we waited twenty seconds for results and we recorded the bubble height.

In the end, most of the bubble columns got to four to seven centimeters except the temperature of 100 degrees celcius. Also. the average temperature for all of them was twenty degrees celcius to fourty degrees celcius.

Busy Day!

Hey, Anka here! Today was a busy day in biology class!

For starters we learned about catalysts. A Catalyst is a substance that speeds up a chemical reaction because it decreases the amount of energy a cell needs to use during a chemical reaction.

To demonstrate the effect of a catalyst

during chemical reaction, our teacher poured a small amount of hydrogen peroxide into a graduated cylinder. Hydrogen peroxide is known to turn into water after a certain amount of time. Well, to speed up the process, a catalyst solution was added to the hydrogen peroxide. Adding the catalyst caused a crazy reaction that made the hyrdrogen peroxide bubble up. The catalyst was speeding up the transformation of hydrogen peroxide into water! Cool, right?!

After learning about catalysts, we conducted a lab comparing normal and plasmolyzed cells. A cell is plasmolyzed when a plant cells protoplast is forced to shrink due to water loss.

• To begin the experiment, we prepared a wet mount with 3 drops of TAP water and added one elodea leaf to the water. Then, we wait 3 minutes. After 3 minutes, we observed the leaf under low and high power on a microscope. We then picked one particular cell to observe. The cell was green and contained a cell wall and chloroplasts. We noted that the chloroplasts were randomlyspaced out, as you can see in the picture to the right.
• Next we prepared a wet mount with 3 drops of SALT water and added one elodea leaf to the water. After 3 minutes of waiting, we picked one single cell and observed it under high and low power. The cell was also green and contained a cell wall and chloroplasts. HOWEVER, the chloroplasts were sort of clumped together in the center of the cell.

This was caused by osmosis. Osmosis is when areas of high water concentration move to areas of low concentration. This happened because if you apply salt water to an elodea leaf the

balance of the water outside the cell and inside the cell is changed. The addition of salt to water causes the water concentration to diminish but the salt to increase. In other words, more water molecules were leaving the cell rather than going into the cell and more salt molecules were going into the cell. This caused chloroplasts to clump together, which means this cell was plasmolyzed. This is why plasmolyzed cells are different from normal cells.

And that's basically what we did in class today! The next scribe will be Sarah! (:

DIFUSSION LAB!!!

Sup it's Yasmin guys and this is my first post... anyways today class was pretty chilll even though I had know idea what I was doing. The lab we did today was THE DIFUSSION LAB. The point of the diffusion lab was to provide background for the understanding of diffusion in living cells. We put water in a beaker, then added iodine. Second, we filled the cellophane dialysis with soluble starch solution. Then added 20 drops of glucose solution to the cellophane tube. After that we placed the tube in the beaker. While we were taking notes (funnn!) we left them there for them to do their magic! Finally, all the groups went back to see the results. We placed a tes-tape in the beaker to see if glucose was present, it was because the tes- tape turned green . Furthermore, the iodine difussed because it was going through osmosis. Also, the starch turned purple because idodine got into the sausage, this happened because the glucose difussed through the sausages membrane. In conclusion, we now know how difussion works in a cell!

Also, I went to give credit to Eleni.P! she helped me through this post. Without her I coudn't have done it. Thank you.

class today

Hey its mike here and we had a very interesting class today. In the first part of class we just reveiwedthe organelles in a cell. Then class really got interesting when we went into a very complicated and hard process in which biochemical energy is made . The process turns glucose into ATP in the mitochondria. The glucose goes through many processes as you can see in the chart like first the krebs cycle which produces a little ATP and then the electron transport which produces a lot of ATP and energy for the cell to use. After this process to release energy the cell breaks the chemical bond of the second and third phosphates in ATP. This breaking of these chemical bonds creates a lot of energy and helps the cell do its job. well that is what we learned today in class bye.

CELLS CELLS CELLS

De hello everyone, its Lucas,

yesterday in class we learned about cells and their parts. More specifically we learned how each thing was used in the cell. we learned the difference between plant and animal cells also.one of the main differences plant cells have a wall on top of the cell membrane as with animals , they only have a cell membrane. the reason they have this wall is because it is used in the reproductive process that is much different from the animal cells reproductive process. we also took a quiz. this quiz had a very interesting way of asking what each cell did. the quiz had you correlate between a real life situation, such as a cake shop, and how a cell's inter workings do specific things that help the cell achieve a specific task. each type of plant or animal cell has a specific role that it does to help the organism that it makes up survive.

so goodbye everyone (^.^)

The next scribe is HENDERSON! (MikeH)