Class Tuesday 14th December

The first part of science class everyone enjoyed. This is because it was the part that we got rid of our flour babies. However we had to go through many steps First we had to remove all personal touches exept the tape that held it together. So this included faces and clothing. Then Ms. Went around and decided whether or not the flour could be donated. Those who could were sent down to the P.E. office to give the flour to the P.E. teacher so she could donate it to the less fortunate for Christmas.

Note: we did not really use this brand of flour

After everyone had returned Ms. D told us who we could still comment to on the blog because some people had already done all they needed for a certain grade. Remember in total you need 4 8th grade comments and 3 7th grade comments. Also remember the blog comment is due Thursday at 4 not Friday at4.

Then we moved on to the cell cycle.
We worked on trying to model the phases of the cell cycle(prophase, anaphase, metaphase, and telophase) with simple materials. Using the images from our Cell Cycle packet however many people ran into trouble when Ms. D asked questions about function of certain parts of the cell. So we reviewed together on the board. Mainly we talked about what centrials and spindle fibers. The centrials control everything about cell division they are the boss of the process. spindle fibers pull the chromatids to the sides of the cell so they are ready to be part of a new cell. After clearing that up we continued making the phases. After successfully making all parts of Mitosis we made the different parts of interphase. Then we remade the parts of Mitosis quickly probably in the amount of time we spent talking about the functions of centrials and spindle fibers. Then we taped our model of a phase of our choice to a piece of paper and then label it. It could not be one of the stages of interphase. Then we took out our packet from along time ago with the blank cell cycle and filled in the part we were supposed to have drawn originally but many people had written the stages. Then we discussed what eh cleavage furrow was in the telophase stage The cleavage furrow is the bump in the cell when it is separating it is given this name becsue clevage it what is is called when a woman shows her breast and this bears a resemblance to this.

Remember Quiz on Thursday details can be found on Moodle
Flour Baby Reflection due on the 15th details on Wellness Moodle

Ineresting videos

Explanation of cell cycle here
Interesting animation here

The next scribe for when we return from break is Davide.

Science Class on Thursday (9th december)

First our science class was interrupted by the French-students who had to leave for the sing-training. While the main group (the French-students) were singing, the others already started doing our homework for Friday, which was to finish the cell cycle and Mitosis-sheet. After the rest of the class arrived back, we started reviewing and discussing Photosynthesis, cellular respiration, Fermentation and the new discovered bacteria, that only needs Arsenic to survive, for the quiz we will have on THURSDAY not on Tuesday.

Then we started the main work of the day which was to fill in the rest of cell cycle-sheet which we didn’t understand or didn’t do for homework. First of all there are two types of Cells.

Eukaryote Cells:	Prokaryote Cells:
- have a nucleus	- have no nucleus
- go through cell cycle	- do not go through cell cycle
	- are bacterias

- break in half (binary fission)

Cell Cycle:

Interphase:

Starting at the G₁-Phase (1^st growth-phase) obviously the cells grow and start creating organelles and begin metabolism. Sometimes cells jump out of the G₁-phase to the G₀-phase in which they stop dividing (e.g. heart-cells, nerve cells).

The next phase is the S-phase (synthesis-phase) in which chromosomes are getting copied. Then the G₂-phase (2^nd growth-phase) follows in which the cells prepare for cell division.

M-phase (mitotic-phase):

After completing the Interphase successful the cells move into the Prophase, Metaphase, Anaphase and the final phase, the Telophase. In this class we haven’t discussed the M-phase we only filled out the cell cycle with them.

While filling out the cell cycle-sheet we also reviewed the 6 kingdoms which are:

· Animal E

· Fungi E

· Plant E

· Moneran P/E (single cell)

· Archbacteria P (can be single a cell)

· Protists E (single cell)

Then we wrote the names of the different phases at the top of the mitosis part (of an animal cell) of the cell cycle sheet as training. The drawings were already suppose to be done for homework.

Homework was to finish the Cell Cycle and Mitosis-sheet Ms. D. gave us, but don’t do page 10 and 11. (More information on the moodle-web-site).

Links:

Link for homework and information: http://zagreb.ceesa.net/course/view.php?id=189

Cell Cycle-sheet (which we did in class):

http://zagreb.ceesa.net/mod/resource/view.php?id=4049

Next Scribe is Cip! (Please look at Cips Blog for the real next scribe because mine is late and he already posted his)

The class of December the 10th

Hello Everyone,

Today we weighed our flour babies, a project we are working on in our wellness class. This has been the third time we weighed our flour babies and it is the second last time we will ever do it. After that we went over our cell cycle and mitosis packet. Which you can find here: http://zagreb.ceesa.net/course/view.php?id=189.

Basic Definition:

The cell cycle, or cell-division cycle, is the series of events that take place in a eukaryotic cell between its formation and the moment it replicates itself. These events can be divided in two main parts: interphase (in between divisions phase grouping G₁ phase, S phase, G₂ phase), during which the cell is forming and carries on with its normal metabolic functions; the mitotic phase (M mitosis), during which the cell is replicating itself. Thus, cell-division cycle is an essential process by which a single-cell fertilized egg develops into a mature organism and the process by which hair, skin, blood cells, and some internal organs are formed.

For more detailed information you can either visit the link I posted earlier or you can watch this informational video: http://www.youtube.com/watch?v=lf9rcqifx34

Thank you for your attention

The class of t 7 December

(This is a diagram for a part that is farther down.
Pleace click on it. It will be more readeble.)



Hy!

Today in class we first redid the lab we did last class because it didn't really work.

Than we talked about pigments and how we see colors.

Our next theme was photosynthesis and respiration. While we were talking some of the test tubes popped.
Here is a song about photosynthesis:
http://www.youtube.com/watch?v=tSHmwIZ9FNw
This will tell you what photosynthesis.
Celliar Respiration: (not breading)
-happens in cells


-1st stage: (happens in the cytopats)
× takes the foodand breaks it down into smaller molecules (small energy produce
× sends CHO (charbohydrates), proteins, and fats to the cell to be used as energy.
× takin glucos and providing energy.





-2nd: (happens in the mitochondria)
× glokos + oxigen = reaction (no light)
× produces a lot of energy
× C6H12O6 + 6O2 = 6CO2 + 6H2O + energy







After this we did genedicts , because we have flover babies( these are sackes of flower that you have to carry around everywhere like baby) and they nead faces. We were flipping coins so we couldfinde out hove our baby will look.

The homework was to draw the face. http://zagreb.ceesa.net/



The next scribe is Val.

December 2nd Class

First off, in class we handed in our Plant Labs, and talked a little bit about the appropriate format and content of our plant lab write-ups, notebooks, and graphs. We then immediately continued our lab looking at the stomata on the back of plant leaves. Stomata (or stomatum singular) are holes on the back of leaves, which are opened and closed by guard cells (picture below).

We started the lab off on Tuesday by getting our Mum and Pansy plant leaves and painting their backs with nail polish, then removing it with clear tape and putting this transparent outline on a microscope slide. This part of the lab also came with a short re-introduction to how microscopes work (picture below)

Our homework was to read pages 49 - 53 in our textbook, and take notes on respiration and fermentation, as well as our blog comment for Friday. This can be found in detail on Moodle. We also watched a photosynthesis song during class, which can be found here. The next scribe is Calvin.

Science Class December 3/Stomata lab/ Respiration chp.

Today in class we finished up the stomata lab. To watch a video about stomata go here http://www.youtube.com/watch?v=IlmgFYmbAUg . Stomata picture to the right. To recap this lab before I move on, the lab was about the number of stomata on a pansy and mum leaf. The purpose question was, "which plant leaf has more stomata the pansy or the mum?" Now to continue with the day we discussed question number 5 which was, "Why is there more stomata on the bottom of a leaf than there is on the top of the leaf?" We agreed that the answer was, "Because if more were on the top of the leaf then it would dry the plant out due to the fact that the direct sunlight would dehydrate the leafs. So more are on the bottom because indirect sunlight is better than direct."

After we discussed that we moved on to talk about transpiration. To sum it up it is the way a plant breathes and sweats. Picture down and to the left. Video is in the link http://www.youtube.com/watch?v=U4rzLhz4HHk . The things that move in and out of a plant are carbon dioxide(in), water(out/in), and oxygen(out). Then we talked about photosynthesis which is the process in which a plant uses carbon dioxide and the sun to make energy.

After we had finished talking about the lab we went on to talk about respiration, which is in the respiration chapter. The formula for this is C6H12O6=6CO2+6H2O+energy. If you would like a detailed discription of this process then read it in your book on pages 50 and 51. A video about respiration is in the link http://www.youtube.com/watch?v=HiT621PrrO0 .

We then did an experiment on respiration with yeast and sugar water. The lab took longer than was anticipated but was cool. The supplies for this lab were goggles, two test tubes, one funnel, one test tube rack, yeast, sugar, water, and a graduated cylinder. That was the lesson summary for today tune into the blog next when Terez writes it.

Class on Tuesday November 30, 2010

Hi everyone,

During science class on Tuesday we did many things. But first of all remember there is homework that is due on Thursday December 2, 2010 in science class. The homework that is due is the Team Plant Lab. If you lost the sheet go to Moodle under 8 Science 10-11

Make sure that you have the following things in your NOTEBOOK for the Team Plant Lab:

Graph - Make sure its on grid or graph paper (not line paper)

IVs

DVs

UVs & CVs - As many of these as possible

Hypothesis

Paragraph - can be typed or handwritten but must be in your notebook. In here make sure you mention if your hypothesis was supported or negated. Mention at least three errors and why they happened.

State whether everyone put in the same amount of work and effort into the lab (This is separate from the paragraph)

There is also homework due on Friday December 3, 2010. Make sure to do the blog comment by Friday at 4 PM. If you commented twice on this blog you should make sure to also comment on the 7th Grade Blog.

In class we took notes on photosynthesis and started a lab.

Make sure you know these things about photosynthesis:

Photosynthesis is the process of cells taking NRG from the sun to produce food. This takes place in the chloroplasts. CO2 is needed for photosynthesis to happen.

1st stage - Plant captures NRG from sunlight

2nd stage - uses NRG to make food for plant

Some definitions that we learned in class:

Carnivore - eats meat only

Herbivore - eats plants only

Omnivore - eats plants & animals

Scavenger - eats dead stuff

Decomposer - break dead stuff down

Stomata - Opening (pore) on the underside of a plant leaf.

For the leaf stomata lab we started in class we were in groups of two:

Fabi and Davide

Iva and Reza

Terez and Ciprian (Cip)

Viktor and Antonia

Vance and Sophie

Bryce and Giovanna (Gio)

Noam and Valentin (Val)

Calvin and Daniel (Dan)

The main thing you should remember about class on Tuesday is Photosynthesis. Make sure to know about it. If you want to learn more about photosynthesis watch this video.

That was what we covered in Science on November 30, 2010 and the next scribe is...

Daniel (Dan)