Monday, October 18th!

Today, in class...
Turn in our multi-flow map and stampsheet. We then read Britteny's post. After that we discussed and took notes on pH levels, how they effect enzymes, and about cancer.

Homework...

STUDY FOR TEST! (Wednesday)

Cancer paper (10/25)

Turnitin.com account needs to be set up (TOMORROW!)

Notes!

Regulating Cell Cycle

Cyclins- proteins that regulate the cell cycle.

~They signal for the formation of the spindle aparatus during interphase

~They also tell a cell to divide when it should, and prevent a cell from dividing when it shouldn't

Internal Regulation- proteins that are found within a cell. They check if a cell is prepared for mitosis.

~Internal things needed for mitosis: Spindle fibers, replicated DNA, etc.

~If DNA is mutated, these proteins will not function properly.

External Regulation- are outside the cell. They are signals to speed up or slow down cell division.

~Contact inhibition

~Healing a wound.

Plant & Animal Cells in Mitosis

The major difference between plant and animal cells during mitosis is that plant cells form a cell plate during telophase, while animals cells pinch apart at the cleavage furrow. Also, animal cells have centrioles and plant cells do not.

Don't forget tomorrow is a BIO DAY so we will meet in the LYCEUM!

Our next scribe is

Michael Lenckos

October 14th Blog

Today in class we were doing the mitosis lab-UP 44-51. Before we started Mrs. Stein showed us the process of cell division with our hands then showing us an animation of of cell division. Here I have some pictures of what we saw in the microscope during the lab. And as for Lab 18 in the packet, we will work on that tomorrow.
We also discussed the cancer paper. Mrs. Stein went over the rubric and reminded us about citations and where to find research.


Here is the agenda and homework for today
1) Hand in Mitosis Color Code
2) Cancer Paper- questions about the rubric?
3) Notes-mitosis w/ animation
4) Work on mitosis lab-UP 44-51

HW:
UP 44-51 due at the end of class tomorrow
Cancer Paper-10/25

The next Scribe is Brittany

10/13/2010

Today we had a late arrival so we didn't have time to do much in class but we did check in our cancer graphs and got our stamp sheets stamped. We also took some notes on mitosis and had the rest of the class time to work on our mitosis color code which is homework if you did not finish in class.

Homework
Finish mitosis color code wit annotations due tomorrow.
Work on research for cancer project due on Monday, September 25

Mitosis Notes
G1- cell grows, normal functions of life

S phase- DNA and chromosomes are replicated

G2- cell grows and prepares for mitosis by making proteins and structures needed for division.

M phase- physical division of cell

- in interphase chromosomes appear as chromatin

- when mitosis begins chromatin condenses to form visible chromosomes

- sister chromatids are identical halves of a duplicated chromosome

our next scribe is Michael Ruderman

Enzymes

Here is the enzyme picture i showed you in class... be sure it makes sense to you!

IT'S WEDNESDAY!!! =)

TEST TOMMOROW!!!!! REMEMBER TO STUDY!!!!!

We started today’s class by handing in our homework. We turned in our color codes and got stamps for our definition maps and prelab. We then setup our labs by putting glucose solution into our “sausages”, tying it off then putting it in a beaker with 200ml of water and some iodine. While we let them sit in the water we went back to our seats and took some notes and talked about the lab. After that we went back over to see what happened to our “sausages” and answered the lab questions.

Notes

Cell (plasma) membrane:
Selectively permeable - regulates what enters and exits the cell
Lipid bilayer (2 layers of lipids)
Mosaic model - contains many types of proteins, pumps, channels and receptors

Diffusion:
particles move from areas of high concentration to low concentration
particles move until equilibrium is reached
particles move passively - no energy (ATP) required

Osmosis:
diffusion of water through a selectively permeable membrane

Homework:

finish lab (UP page's 34-35)

extra credit

TUESDAY!!!

Hand in:
Check my understanding.

Today we went over a few more slides on cells and took notes on those. Yesturday the slides were put up on moodle today we had to write down the information. Mrs. stein informed us that the quizz has been moved to thursday!!! After we finished taking notes we had the rest of the class period to work on homework. We had 3 things we could of been doing, prelab, coloring/anotating, or deffinition maps.

homework:
~deffinition maps
~anotate/color colorcodes
~prelab.

next scribe: Kajsa

Cells and Organelles!

Agenda: 
1.) Hand in UP 9-14
2.) Take out organelle chart and stampsheet
3.) Notes on organelles
4.) Work on colorcode/annotations

The first thing we did in class today was to hand in the UP 9-14 lab that we worked on last week. Then, Mrs. Stein checked our organelle chart and gave us two Elmo stamps on our stampsheet.

Next, we quickly reviewed the differences of a plant and animal cell. Remember that a plant cell has a cell wall, chloroplasts, and a large centrical vacuole, while an animal doesn't. An animal cell does contain a centriole, though, while a plant cell doesn't. The most important hings that both cells have in common is that they both contain DNA, have cyotoplasm, and a cell membrane.

We also took notes on the nucleus, ribosomes, the endoplasmic reticulum (ER), golgi bodies, and chloroplasts. 

Nucleus 

The nucleus contains DNA and the instructions for making proteins. A nuclear membrane surrounds the nucleus and has pores that allow materials to pass through the membrane. Inside the nucleus, DNA is stored in the form of chromatin. During mitosis, chromatin condenses into chromosomes. The nucleolus is found in the center of the nucleus and is the site of ribosomes assembly. It is made out of RNA and protein.

Model of a cell's nucleus

Ribosomes and ER 

Ribosomes are in charge of making proteins. They can be found floating in cytoplasm or they can be attached to the ER. The ER transports materials through the cell and is the site of lipid assembly. There are two types of ER. There's rough ER and smooth ER. Rough ER is involved in the transportation of ribosomes and they are attached to the outside of it. Smooth ER doesn't have ribosomes attached to its surface  and is mostly involved in lipids. 

A model of ribosomes and the ER

Golgi Apparatus 

 The golgi body sorts, modifies, and packages proteins and other materials. It receives materials from the ER and them ships them to specific places in the cell. They're like the UPS guys of the cell.

A model of the Golgi body 

 

Chloroplasts 

Chloroplasts can only be found in the plants and algea. It's the site of photosynthesis where light energy is converted into chemical energy. Chloroplasts also contain chlorophyll which gives the cell its green color. 

After we finished taking our notes, we started working on the colorcode worksheets that Mrs. Stein gave us. We were supposed to annotate it, and then color in the organelles according to the what it says. Remember to also shade in the titles of the color you used, so that it'll be easier for Mrs. Stein to grade. 

Our homework for tonight is: 

1.) the colorcodes (due Wed.) 

2.) Read pgs. 226-228/ pgs. 250-251 and do a seperate "check my understanding" for each 

3.) Quiz Wed. 

The next scribe will be Ashley

Microscope Friday!

so hey everyone I finally posted a blog sorry it took so long!

to make it up i will post Thursdays and Fridays blogs.


Agenda:

• Discuss cell types pg 3,4 in UP
• Start cell lab (up) p. 9-14

HW:

• Read ch. 7
• Organelle chart

Agenda:

• Finish cell lab p. 9-14

HW:

• Finish cell lab p. 9-14
• Organelle Chart due: Mon

On Thursday in class we took some notes and then we started on the lab looking at different types of cells. during that time we had people go up one at a time to take a quick microscope test to see if we can use one. people who couldnt take it last week have a chance this week and people who failed and can try again.

Elodea leaf cell









This is an example of what we saw in the lab we were doing.



On Friday we were finishing up our cell labs and there was not much we did in class except for the lab. our only homework is to finish the pages 9-14 in our packets and do the blue organelle chart by Monday.








Human cheek cell








The next scribe will be Monica!

WOOOOOOO NEW UNIT!

AGENDA:
1) GRADES/ATTENDANCE/STAR AND WISH
2) NEW UNIT (CELLS + CANCER)
3) REVIEW MICROSCOPE

We started off Biology today by getting back our grade reports. We also received our new unit packet on Cell Theory and Cancer and a new agenda. After that, we briefly discussed our new unit. We then collaborated a small list of ideas/words that we can remember/relate to our new unit.

Here is the list that we came up with:
CELLS:
-BASIC UNIT STRUCTURE OF ORGANISMS
-Organelle (cell parts) have different jobs
-ALL LIVING THINGS HAVE CELLS (BUILDING BLOCKS OF LIFE)
-Phases of mitosis
-Specialization -> Cells do different things and there are different types of cells
-Cell divide/reproduce -> Cells come from cells
-Types of cells -> animal/plant etc.
-Nucleus (Contains DNA)
-Cytoplasm
-Cell membrane
-Golgi Bodies-Nucleolus
-Ribosomes
-Mitochondria
-Chlorophyll/Chloroplast

-Lysosomes
-Vacuole
Not so bad eh?

After we did our mini collaboration, we took notes on the new unit.

LEVELS OF ORGANIZATION

CELL THEORY:
-All living things are composed of cells
-Cells are the basic unit of all living things

CELL SPECIALIZATION:
-Cells develop in different ways to perform different tasks
-Complex organisms have more specialized cells
-Structure determines function

After our note taking, we went on to review how to use a microscope with a partner. We will be having a mini microscope test tomorrow to test your knowledge on how to use a microscope. If you REALLY REALLY aren't confident going tomorrow, talk to Mrs.Stein to postpone your testing on Friday. You will have 45 seconds to get the specimen in focus on high powered objective.

If you need to review or need more practice on a microscope, you could always go here:
VIRTUAL MICROSCOPE

Homework:
1) Read 7.1 Double Bubble Map. "Eukaryotes vs. Prokaryotes"
2) Unit Packet page 8 PRELAB
3) Moodle Forum
4) Extra Credit

Our next scribe is NAWON