KIDS THESE DAYS

What is shaken my fellow classmates!?

Right now the weather is feeling to dangerous so that is not what we will be talking about. I will also not be talking about the faces on the students when they finish reading this because I have not even posted it. HAHA classic.

I will be talking about topic that all kids are talking about........

!BACTERIA!

Cell division is the only form of reproduction. It is know as asexual.(the production of genetically identical offspring from a single parent)

There is also conjunction. When bacteria pass genetic info between each other through a hollow bridge. Also known as SEXUAL reproduction.

Lots of bacteria remain dormant until conditions are better to grow. Like a seed, this ones for you Mr.Paek, it remains in packet until put in the ground with all the things it needs to grow. Just like the bacteria it stays in a Spore formation, a protective covering, until it is ready to get its work done,(like a BOSS).

Now all you children out there think bacteria only hurts you like punching and kicking and taking over the world, but your wrong!

They act as decomposers by breaking down dead organisms and creating new material. They also act as Nitrogeon fixers, (bacteria does a lot of acting).

Many people of are galaxy use bacteria to give it a flavor that brings joy to living things around the world.

BUT.........

Bacteria also spread diseases, because when they produce waste, feces, and other stuff that comes from there body it creates viruses that can eventually DESTROY you jk, but you never know.

Also know that vectors are those buggers that carry the bacteria and diseases, aka MOSQUITOS don't cry I hate them too.

And if you use the right antibiotics we can fight the bacteria together.

Thank You so much

MY name is Quinn Abraham Lincoln and I approve this message

P.S

I am not finished

In class we took notes cough cough look up^^^^^^^^^^^^

we also took a quiz that I am pretty sure I epically failed

Also we din't have any

homework

"You can't change the world unless you change yourself"

The one and only B.I.G.

http://www.youtube.com/watch?v=rDG0c3saE4I

peace and stay fresh as can be........

SAY CHEESE

Scribe Post

Today we went over greenhouse gasses and the human affect on the atmosphere. We learned that the burning of hydrocarbons(fossil fuels, or gas) and the desruction of rainforests are the biggest contributers to global warming.

The greenhouse affect is shown in the picture above. The greenhouse affect happens when there is too much CO2 in the atmoshphere and the sunlight that usually ecapes the atmoshphere stays in the earth heating up the planet.

This causes the melting of the polar ice caps and flooding of lower regions.

HOMEWORK: FINISH OIL SPILL MOVIE DUE TOMOROW!!!

Scribe Post, 10/27/2010

EL SCRIBE DE POST

HELLO! And welcome to today’s scribe post, it is 10/27/2010, and is currently windy with a high chance of thunderstorms, so strap on those ponchos Chicago!

Today in class, we went over the Disease of the Day, and we watched a couple of videos regarding Anthrax and various other germs, and a news report on Cholera. The video for the Cholera “out-break” can be found here, http://www.youtube.com/watch?v=anFi_jYIRZE. We also took notes on Cholera, which was our Disease of the Day, and it included different types of shapes of germs, Archaebacteria, and Eubacteria. Mr. Paek also called us Bacteria >:{ .

To learn more about the notes we took, we were handed out a paper of all the slides of the day. I have taken the liberty to scan and insert the image into the post (yay!).SORRY, MY SCANNER WON'T WORK.

Eubacteria:

Exists almost everywhere, and is a new bacteriophage. They have cell walls made of peptidoglycan.

Archaebacteria:

Old bacteria cells that are virtually dead and useless, some-what rare.

Shapes of Cells:

Bacilli (rod shaped)

Cocci (spherical)

Spirrila (spirally)

How do bacteria get energy?

-Some bacteria are heterotrophs (energy from inorganic molecules)

-Some bacteria are Autotrophs (Make own food)

-Some bacteria are Photoautotroph (Uses sun)

Metabolism

-Respiration

-Obligate Aerobes – Organisms that require oxygen

-Obligate Aenorobes – Organisms that do not require oxygen

-Faccutive Aenorobes – Organisms that can survive without oxygen

MORE INFORMATION ABOUT CHOLERA:

-Bacteria

-While infected, you die from severe diarrhea, which induces very severe dehydration

-Transmitted through food

-Targets intestines

-Treat bacterial disease with anti-biotics

On another note, the Quiz is tomorrow, and it is on the text book assignment, and that is our homework for the night. Also, some student in our class has a younger brother who gets repetitive constipation. We are all here for his support.

10/26/10 Scribe Post

Today's Homework:

none

Announcements:

Quiz on Thursday on 20.1 and 20.2

Today we received a worksheet called "Current Infectious Diseases-Disease of The Day," it is to be filled out daily with the notes. Today's disease is Aids.

Notes:

Viral Infections

-H.I.V. is a virus

-When T-cells drop down too low, you have Aids.

-Viruses work like this:

=A virus is introduced to the body.

=The virus binds to specific proteins on the cell's surface

=The virus injects it's DNA into the cell

=one of these viral infections occur:

I.Lytic Infection- The DNA replicates quickly in the host cell and the cell explodes

II.Lysogenic Infection- The DNA replicates slowly and discretely, like guerrilla warfare

We also watched this video in class, I found it to be very helpful. Also, notice the way he says phage.

http://www.youtube.com/watch?v=Tw-LAiPX9y0&p=A7F0FF0F1C956D0E&playnext=1&index=2

After the video we watched a movie about viruses, particularly influenza. I took these notes.

-Viruses are old and patient

-Some wait for centuries

-A viruses only purpose is to reproduce

-There are 7 different kinds of herpes and odds are you've had at least one kind before

-Viruses look like ornaments from an alien Christmas tree.

-Viruses are mostly packages of DNA

- They act like parasites on cells.

-Viral DNA hijacks cells and makes them produce more viral DNA

-Tons of cells are made in this ^ process

-During the Influenza pandemic of 1918 roughly 20 million people died

-Influenza killed more than WWI

-Influenza spread thanks to WWI and got all over Europe and America

-People used crazy methods of protection from the flu, it didn't work

-The word "Vaccine" came from "Vaccinia" or Cow Pox

-A doctor discovered the first vaccine by giving his son Cow Pox and exposed him to Small

Pox, as he hypothesized, the Cow Pox protected him from Small Pox.

-Vaccines give the body a taste of what a virus is like so the body knows how to defend against it.

-Every year a new Vaccine is needed for viruses with RNA as apposed to DNA

Fun Stuff:

That silly Anthony thought the iron lung was used for mountain climbing!

REMEMBER:

If you use heroin, be sure to use your own needle so you don't contract HIV!

THE END!

Sources:

http://www.google.com/images?um=1&hl=en&biw=1440&bih=785&tbs=isch:1&sa=1&q=virus+attaching+to+cell&aq=f&aqi=g1&aql=&oq=&gs_rfai=

http://www.google.com/images?q=aids&um=1&ie=UTF-8&source=og&sa=N&hl=en&tab=wi&biw=1440&bih=742

http://www.google.com/images?um=1&hl=en&biw=1440&bih=742&tbs=isch:1&sa=1&q=Guerrilla+warfare+vietnam&aq=f&aqi=g1&aql=&oq=&gs_rfai=

http://www.google.com/images?q=virus&um=1&ie=UTF-8&source=og&sa=N&hl=en&tab=wi&biw=1440&bih=742

http://www.google.com/images?q=influenza&um=1&ie=UTF-8&source=og&sa=N&hl=en&tab=wi&biw=1440&bih=742

http://www.google.com/images?q=vaccine&um=1&ie=UTF-8&source=og&sa=N&hl=en&tab=wi&biw=1440&bih=742

10/18/10 Scribepost

Today in class Mr. Park started off with ending his powerpoint about diffusion because he wasn't there the day of that lab.  What he wanted to talk about was osmosis- which is the diffusion of water through a semi-permeable membrane.  Look at the diagram below to see an example of it.

After Mr. Paek finished going over Osmosis he moved on to the last part of the unit, which is cancer (it will be included in the test).  These following bullet points is what he went over in his powerpoint and discussion.

• Cancer- is the uncontrolled growth of cells
• it caused by changes in a cell's DNA, which can lead to a unrestrained cell reproduction
• It makes cells produce a growth factor and never stops dividing OR  don't produce a suppressor protein and it never stops diving.

Also we talked about the differences between the cancer cell and a normal cell. This is the chart that was on the powerpoint in class.

The last part of the notes was about the two types of tumors. The two are benign and Malignant.

• Benign- is a slow growing, noninvasive cell which is also not metastasis. (not cancerous)
• Malignant- is a rapid growth in cells that is invasive and metastasis ( can jump to other parts of the body) it is cancerous.

A couple reminders:  1. We are meeting in the Lyceum tomorrow for a bio day

2. We have a test on Wednesday about the cells, their functions, cell cycle and cancer

3. The homework was to do the unit 2 review packet for wednesday and optional for extra credit is the objectives sheet.

4. Last is don't forget the cancer research paper is due next week so keep researching and working on it

10/14/10

Today in class we had a sub and she started telling us to get with our groups and start our mitosis labs.Our homework was the pre-lab which was on pages 40, 41, and 42 in our unit packets. The real lab can be found on pages 44-47 which was also in our unit packets.

For the labs, we had to look at onion root tip cells from a microscope and answer the questions according to each phase which were on pages 45-47. These were the descriptions of each phase of the cells:

Interphase: The cell contains easily seen nucleus and nucleolus-chromosomes appear as fine dots within the nucleus.

Prophase: The cell's nucleus is enlarged-nucleolus is no longer visible-chromosomes appear as short strands within the nucleus.

Metaphase: The chromosomes are long and thin strands-they line up along the cell's center and it looks like a "spider on a mirror."

Anaphase: Two sets of separate chromosomes can be seen-they look as if they are being pulled apart from one another.

Telophase: The chromosomes appear at the opposite ends of the cell-the middle of the cell has a line across the center that divides it almost into two new cells.

Daughter Cells: They appear as cells in interphase but smaller and side by side-it's actually the start of a new interphase.

We did the lab for the rest of class. Our homework was to finish the lab if we didn't and to color the picture on page 52A in our unit packet.

P.S: Matt is very flexible.

Scribepost period 8

Friday in class, Mr. Paek first said some announcements about the test and things coming up in class. Then, we went over the lab.

ANNOUNCEMENTS

• Test Wednesday
• Bio Day Tuesday
• EXTRA CREDIT: cell theory objectives page 1= CROSS OUT #10-14
• Study Session Tuesday after school for test Wednesday

LAB

The lab is found on pages 48-51. The main idea of this lab, Time For Mitosis, is to figure out the differences between stages of a cell in mitosis. In this lab, we looked at different sections of a slide with onion root tip cells on it and identified the different stages they cells were in. We then put our information in a table and calculated the times for completion of the phases by using the formula:

time for phase = number of cells in a phase/ total number of cells counted x 720 minutes

For homework, finish pages 49-51

HELLO my fellow classmates. I would just like to say that eighth period biology is da bomb.

Besides that today in class, 13/10, we went over the cycle of a cell. I.P.M.A.T. is the order of the cycle.

The I stands for Interphase. Interphase is where the cell grows and replicates its DNA and centrioles.

The P stands for Prophase. Prophase is where chromatin condenses in to chromosomes, centrioles separate, spindle forms, and the nuclear envelope disappears.

The M stands for Metaphase. Metaphase is where chromosomes line up in the center of the cell, and they attach themselves to the spindle fibers. Also when two chromatin replicate and attach them to each other, it is called sister chromatin.

The A stands for Anaphase. Anaphase is where sister chromatins separate into individual chromosomes and are moved apart.

Last, but not least T for Telophase. Telophase is where chromosomes gather at either end of the cell and two nuclear envelopes will form.

There is also Cytokinesis and that is when the separated cells form new chromosomes, a new cell.

A question in class today, asked by Anthony, was why can't we just have a couple massive cells. Mr. Paek responded by saying, "silly Anthony it is better to have millions of small cells because there is more room for things to go in and out as for big cells there would be barley any movement in and out of the cell."

The class today was only thirty five minutes so we only went over the cycle of a cell and a couple small other things.

Tomorrow in class Mr. Paek will not be here. The homework for tonight is unit packet pages 44-47, and find more info on your cancer that you are researching.

10/7/10 scribepost

Today in class we began by taking notes on Enzymes. After that, we learned about Catalysts and did an experiment with them. During the last fifteen minutes of class we did the prelab to the lab that we are doing in class tomorrow.


Enzymes

• proteins
• lock and key theory, specific
• effected by temperature and PH levels (the acidic level)
• can build or break down molecules

This image shows how an Enzyme uses a substrate to speed up a chemical reaction as a Catalyst.

Later, we learned about Catalysts and we did an experiment with them.

A Catalyst, speeds up the rate of a chemical reaction.

In this experiment we mixed hydrogen peroxide, added soap, then added potassium iodine (salt type) to speed up the process.









The column of bubbles that shot out of the cylinder was very hot but did smell very good. most likely because of the soap.



PH Scale

At the end of class we went over the prelab for the upcoming lab we will be doing tomorrow. It begins on page 24 and goes up to the graphs starting on page 30. In this lab we will be learning how temperature affects enzyme activity. Each group of Four that were announced today will be expected to complete this before the end of the period tomorrow.

Other:

homework was to finish the prelab if you didn't in class.

we will be having a substitute teacher for class tomorrow.

10/5/10 scribepost

1. Mr. Paek showed us that period 4 have more countries that visited their blog than period 8's blog.

2. Mr. Paek collected the cell diagram sheet that was due today. (gave 2 minutes to fill out the roles of the organells for those who didn't do that.)

3. He showed us a power point and went over the cell organelles very quickly. We didn't even have time to write down the notes.

Things you have to know for the quiz tomorrow.

• Cell theory

1. All living things are composed of cells
2. cells are the basic units of structure and function in living things
3. new cells are produced from existing cells

• Cells

1. Prokaryotes- no nucleus Ex. bacteria, more old cells
2. Eukaryotes- has a nucleus and is more recent

• Organelles

Study the yellow organelle chart! In the quiz, there is going to be a section where you have to label and describe the roles of each organelles.

These are few we organelles that we talked about... you didn't need to take notes.

1. know the structure of the cell membrane. It's slectively permeable which means that they are very slective in what it lets in and out
2. Lysosomes- "Lyse"-break stuff down.
3. Vacuoles- store stuff
4. Golgi Apparatus- package stuff
5. and more.

After all the quick explaination of the organelles, we took notes. This won't be in the quiz tomorrow but you'll have to know these for the test. The powerpoint is in moodle!

• Where does cells get energy?- cells use ATP for energy (sugar that is broken down)
• Why does our body need oxygen?- b/c body can't break down sugar without oxygen

Respiration (occurs in mitochondria)

step 1- Glycolysis (splits sugar to 2 ATPs)

c-c-c-c-c-c sugar

c-c-c --- c-c-c

step 2 - process is called aerobic respiration (with oxygen) is more effective then fermentation

1. krebs cycle
2. electron transport system
3. provides 34 ATD for each mitochondria

OR

step 2- fermentation (no oxygen)

2 different types of fermentation

• lactic acid- if it builds up, causes cramp
• alcoholic

5. We filled out pages 21 and 22 in UP packet. Try it without having to look at the organelle chart. We corrected it together after everyone was done.

6. Mr. Paek gave us a prelab worksheet. We got class time to finish it. Use pages 33 and 34 in UP to answer questions. We are doing this lab tomorrow.

Homework: Study for quiz, and finish the prelab worksheet if you didn't finish it in class.

10/1 scribe post

Today in class Mr. Paek told us to finish up the Cell structure and function lab we started in class yesterday. We were assigned to finish up UP pages 9-14 in class and whatever we did not finish in class, we had to do it for homework.

Below are the following cells that we had to view under the highest magnification (400X)

Above is an onion cell

Below is an elodea leaf labeled

Above is Pigs blood

Above is a human cheek cell

HOMEWORK: Chpter 7.2 notes due Monday, and finish lab anlysis questions on Monday

QUIZ ON WEDNESDAY!!!!!!!!

Scribe Post for October 4th, 2010

1. Today in class, Mr. Paek told us that we were going to go over organelles and their functions inside cells. Instead of lecturing us, we are to complete two activities that would be more productive that him just lecturing us all class period.

1a. The first activity is a worksheet using our textbook pages 196-207. We are to decide whether these organelles: Cytoplasm, Nucleus, Nucleolus, Ribosomes, Rough Endoplasmic Reticulum, Smooth Endoplasmic Reticulum, Golgi Apparatus, Lysosomes, Vacuoles, Mitochrondria, Chloroplasts, Cytoskeleton. Are in plant cells, animal cells or both, what the organelle's function is, what it looks like, and if the cell were a city, what role would the organelle would play in the city.

This is what the worksheet looked like. The answers are kinda small and are hard to see. Also, if you are able to see these answers, the may not be right so don't go off of this sheet for the 100% correct answers.

FRONT BACK

1b. The second activity is to be completed WITHOUT your textbook. You are to draw, label and color a cell. You need to label all the organelles listed above and write a one sentence definition of the function of each cell.

BOTH OF THESE ACTIVITY WILL BE CHECKED IN BY MR. PAEK TOMORROW.

Also, we have a quiz this Wednesday. The quiz is on cell theory, organelles (LISTED ABOVE), microscopes, and prokaryotic vs. eukaryotic cells.

The next scribe post will be done by Su.

~Jake Janecek

8-4-10

7.2 notes

7.2 Cell Structure

Cell Organization

• It is easy to divide each cell into two major parts: the nucleus and the cytoplasm
• cytoplasm- portion of the cell outside of a nucleus
• ***NUCLEUS AND CYTOPLASM WORK TOGETHER IN A BUSINESS OF LIFE***
• Structures that act like specialized organs are organelles

THE NUCLEUS

• The nucleus contains all the cell's DNA and the coded instructions for making proteins and other important molecules
• Chromosomes carry the cell's genetic information and are found in the nucleus

Organelles That Store, Clean Up, and Support

• vacuoles- store materials like water, salts, protiens, and carbohydrates for a cell

• Lysosomes- small organelles filled with enzymes
• Lysosomes- break down lipids, carbs, and proteins into small molecules that can be used by the rest of the cell

The Cytoskeleton

• A network of protein filaments is a cytoskeleton
• The cytoskeleton helps a cell maintain its shape and is also involved in movement

Organelles That Build Protein

• Ribosomes- small particles of RNA and protein found throughout the cytoplasm in all the cells and are what proteins are assembled of
• Eukaryotic cells contain an international membrane system known as the endoplasmic reticulum
• Proteins are made on the rough ER include those that will be released from the cell as well as many membrane proteins destined for lysosomes and other specialized locations within a cell
• proteins produced in the rough ER move next into an organelle called a Golgi apparatus
• The Golgi apparatus modifies, sorts, and packages proteins and other materials from the endoplasmic reticulum for storage in the cell or release outside the cell

Organelles That Capture and Release Energy

• Chloroplasts are biological equivalents of solar power plants
• Chloroplasts capture the energy from sunlight and convert it into food that contains chemical energy in a process called photosynthesis

• Mitochondria are the power plants to the cell
• Mitochondria convert energy stored in food into compounds that are more convenient for the cell to use

Cellular Boundaries

• Cell Wall- strong supporting layer around the membrane of the cell, found in plant cells and most prokaryotes, provides much of the strength needed for plants to stand against the force of gravity
• Cell Membrane- found in every cell, regulates what enters and exits a the cell and also protects and supports the cell, contains a lipid bilayer which enables it to be flexible and strong
• Selectively Permeable Membrane- certain substances can not pass through the cell membrane, while others can

**This information can be found on pages 196-205 in your Biology hardcover**