Marking Period is Over

Right when we came into class Mr. Finley cut right to the chase and talked about our grades. If you got a zero on the blog it is either because you did not do it or you forgot to right your name. He also put the grades for our comments. Your name had to be on it. Also for some reason the extra credit grades did not show on the grades. Check with Mr. Finley on your own time and make sure he has the right amount of extra credit points. Then we started reviewing from Wednesday. We gave example of stuff that requires energy like blinking, talking, and many other stuff. We get the glucose from food and then it is turned into ATP which is chemical energy. If we were a dog organism we would have to provide it with air. Air is 70% nitrogen. It would need water. Fish have filters that separate oxygen and water. Our lungs also have filters it filters the nitrogen from the oxygen. We can not breathe under water because we can not filter the water and oxygen. We are having a project where we are getting a organism that live in the water. We can pick what we are going to test. It will not be a fish it will be an aquatic animal. We cant test types of sugar, types of water, temperature and light. We met with our groups and talked about what we are going to do. The students have to bring in the supplies they need. My group is doing the type of water.
Stephen Ferraro Period 7

1/26/11 Photosynthesis vs Cellular Respiration

Today we satrted out class by Mr. Finley coming around to check homework. We then discussed the formula for photosynthesis and cellular respiration. (Cellular respiration- C6H12O6---> 6CO2+6H2O+ATP) (Photosynthesis- 6CO2+6H2O+light energy----> C6H12O6+6O2)

We then said that the formulas were backwards. The Reactants and the products are reversed. The purpose of photosynthesis was to make glucose and the purpose of cellular respiration was to break down glucose to make energy. Since the process is reversed the equations must be reversed. We took a survey to determine that plants do go through respiration. Plants need energy so they must go through respiration. Plants dont just give off oxygen. We cant live in a world where there are only lions and us. They eat us and we eat them. If there were no plants there would be no glucose and no ATP (energy) so we cant move and function without it. Then we discussed a triangle of an energy chain. It went with Plants, Primary sources, Secondary consumers, and then Tertiary consumers from bottom to top(more energy to less energy) The tertiary consumers would have to eat more plants to be at a high energy level. Photosynthesis uses the light energy to make ATP. Plants use ATP to do everything they do and they use light energy to make glucose. We then related this to our excersise experiment. As a result of doing the excersise our CO2 rate went up and cellular respiration happened. We needed more energy (cellular respiration) so that is why CO2 levels went up. You warm because your body needs to get ready for the excersise. you have to tell yourself to start respiration and give you energy. Todays class seemed to give us a better understanding of photosynthesis vs cellular respiration.

PH

Today in class mr Finley came around and checked our homework. Then we had a question on the board that said if we landed on a new planet why would scientists tell you to plant green plants and what we would have to know about the planet before we do it. Our class was trying to figure it out then we figured out the reason we need to put plants on a new planet is because of oxygen. Plants give off oxygen in photosynthesis and we take it in. We need plants on that planet so we can breathe. We also said that the planet also needed water, carbon dioxide and light because those things are neccesary in plant life and we need plants to survive so therefore we need all those three things. Mr Finley then came back to the question he asked earlier which was "can plants survive without oxygen?" about half the class said yes and have the class said no. The correct answer was no. Plants can't survive without oxygen because it is a neccesity in their life. He also said that the biggest differnce between humans and plants is that plants make their own food and humans don't. We also said that fruits and carbs have alot of glucose and the reason people eat carbs before they do a sport is because it has alot of energy.

Jake P

The last class only had 1 group do it right. So Mr. Finley challenged us to do better. Today we are doing a slightly modified lab from yester day. We ar e basically doing the same thing as yesterday except we are testing to find out how light effects photosynthesis instead of carbon dioxcide. You want to get a green leafy plant because it will photosynthecise easier because there are a lot of cholroplasts in each leaf which does photosynthecise. Baking soda is really sodium bicarbonite. The procedure is the same except Mr. Finley gives you baking soda instead of you getting soduim bicarbonite. Also the amount doesn't change. Lastly you need to put a light 10 cm away and watch it for 4 minutes then move it to 20 then lastly after 4 more minutes move to 30 and wait 4 more minutes. As you are going write down the data.

T G

Today we first started by taking out our homework. What we had to do was write our prediction for the experiment we are going to do today. There are 6 groups and 2 groups got the low, 2 groups got the medium, and 2 groups got the high. Mr. Finley told us about this super purified water that got boiled until it couldn't boil anymore. It's more purified than fiji water and if we drank it, the over purified water would just continue to rush into our cells and pop all of our cells. For the experiment we have to do with our groups we have to see if any bubbles rush up to the top. We have to count how many will come up. We have to watch every minute. We are recording all of our data. my group was testing the medium.

Jonathan Munroe

Elodea and Photosynthesis

Today we started of by letting Mr. Finley check our homework. Then for the students who were absent on Friday, Mr. Finley chose two people to catch up those students. Next he gave the tests back. Mr. Finley then gave stickers to the classmates who had the top 5 grades in the class. The equation for photosynthesis is 6Co2+6H2O+Light energy--->C6H12O6+6O2. Plants get CO2 from the stoma on the plant. The organelle in plants that is responsible for photosynthesis is the chloroplasts. Chlorophyll is the pigment found in in the organelle that absorbs light to power. If a plant were under water and was photosynthesizing, oxygen would be visible from the plant. The following picture in the top right corner is a diagram of photosynthesis. We need light energy to trigger a reaction in photosynthesis. Mostly photosynthesis doesn't happen in the dark.

CT

january 14th

photosynthesis fomula

today in class, we started off with reviewing the hw from last night, which was more element equations (hw can be found on mr. finley's website). we discussed them and helped each other with our tables. after about ten minutes, we picked two problems to review: #s 1 and 8.

1. __2__Na + __2__ H2 O = __2__ Na O H + __1__ H2

8. C7 H16 +__11__ O2 = __7__C O2 + __8__ H2 O

• we also learned that 6 molecules of carbon dioxide is 6 CO2 + 6 water molecules is 6 H2O = C6 H12 O6 + 6 O2, which is the same as sugar.


• SUGAR is used for FOOD


• the "food" is used for growth and for supplements of nutrients for energy to do things


• for example, the mass of a plant is made of water and carbon dioxide becuase the nutreints in it are stored and used for photosynthesis.


• without food, we can die becuase it helps us thrive.

-nm

Period 7 Science

Sorry I frogot to add a link.
Please go to the following link to se a picture of Tonicity levels.Thanks!


http://www.websters-online-dictionary.org/images/wiki/wikipedia/commons/thumb//7/76/Osmotic_pressure-on_blood_cells_diagram.svg

Sambavi Prakasam

Period 7 Science

First, Mr.Finley told us we would have a quiz on Tuesday or Wednesday on tonicity stuff, diffusion, active transport, passive transport, concept maps, and osmois.Also, Mr.Finley said that we wre going to have to present our quiz corrections to him from now on. After that, we got back a bunch of papers from the first and second marking period. Another thing was that the new website was taken down and replaced with the new one. Then, Mr.Finley told us that he updated the blogging calender, even if you went three times he put you at the end of the list, you have to tell him if you went three times. Then, we talked about the experiment on Friday. We said that 50 grams of water, which is mass, which is the amount of something that makes it up. Then, if you add 10 grams of sugar to the water you get 60 grams of sugar water. This happens because nothing went away. So it is really 50 grams of sugar water. Which is 50 grams equals 10 grams ash added to 40 grams smoke.The fundamental conservation of maps is that what you have in the begining is still there in the end.
Sambavi Prakasam

7th Period Science Class

We started off our science class by playing a homework review game. This game worked by every person in our class would recite a fact we learned from the simulation on Mr. Finley's home page. This simulation was on photosynthesis and how it worked. When someone said a false fact or repeated a fact someone else said, they would be knocked out. From this, we learned that photosynthesis is not just made from light energy, but carbon dioxide and water too. We also learned that around the stoma, an opening in the plant, guard cells specializes in opening and closing the stoma for carbon dioxide to enter.

After that, we started talking about what mass is. We learned from our discussion, that mass is the value of the amount of particles. The two examples of mass are kilograms and grams. They can be used to weigh anything. We later talked about how whenever an animal (or humans) eats something, the weight of the food adds on to your weight. To prove this, we performed an experiment using a large graduated cylinder full of water on a scale to act as a person. This weighed 273.7 grams. Then we weighed the sugar and said it was 6.5 grams. We poured the sugar into the large graduated cylinder with a small graduated cylinder. The final weight of the sugar-water in the large graduated cylinder was 280.3 grams. This proved that if you eat something, the weight of the food will be added on to your weight.

Stoma: A large opening in a plant for the carbon dioxide to enter it.

Guard Cells: Cells surrounding the stoma which open and close it for carbon dioxide to enter the plant.

Mass: The value of the amount of particles.

A gram scale




After that, the bell rang and 7th period was over. That's what we did in science class.


-Jimmy Evangelos

Mr. Finley's Class

In Mr. Finley's class, Mr. Finley is checking people for the Lab homework. We started a lab. To get there you have to sign in, go to Mr. Finley's page and go to cells structure and functions. Scroll down to the bottom of the page and there is a link to the website that the lab is on.( Celluar Transport) In the lab, there is a table on it, and we are going over the table. The homework was to finish the table and answer the questions. How to get to the questions: Underneath all the ways to do the lab, if you scrool down there is all different pictures. Click on the one that says journal. It will take you to the questions.
Plant has a cell wall which maintains its shape. There wasn't there any bacteria cells because a paramecium is an animal cell not a plant cell. Basicially we just went over homework this whole time. Right now Mr. Finley is giving us an example of a hypotonic cell, and we are trying to figure out concentration, and the ratio. He said when you compare things you need to have like denomanaters so now we are simplifing the ratios that he is giving us so the denominaters would be equal. So when you compare things try to have like denominaters.

First, we went over 3 vocabulary words:
isotonic- Solution has (liquid mixture) an equal concentration compared to something.
hypertonic-more energy when hyper, more concentration 'higher' than something else.
hypotonic-low concentration.
Then, Mr. Finley drew an ice tea example using hypotonic and hypertonic to compare. After that, we did an exampe of our own.
Mr. Finley gave us a problem in which we had a small cap of solution and a large jug. We had to figure out whether, compared to B, A was isotonic, hypertonic, or hypotonic. We made the amount of salt and water for each A and B into fractions. A, was 0.2g/1mL. We reduced that to 2g/10mL and finally reduced that to 1g/5mL. B was 4g/20mL, we reduced that to 1g/5mL. Tomorrow, we are going to do the lab.

Click on this for a definition of hypotonic:
http://www.biology-online.org/dictionary/Hypotonic_solution

He is a diagram of a hypertonic solution

RT

Science blog by Jake V

Today in science we talked about, food and how it supplies us with energy. We then had to define a couple terms. These terms were cell membrane diffusion, passive transport, active transport, osmosis and concentration. We defined diffusion as something that refers to all kinds of molecules. We defined osmosis as something that only refers to water. We defined concentration as something that's responsible for the transportation of water molecules. We defined an active transport as something that is responsible for, using energy to move a material through a membrane. We defined a cell membrane as a barrier to protect the cell. Then finally we define passive transport as something that is responsoble for, raising and lowering the concentration level. Then we were told that an example of difusion would be collogne in a mall. or dye in water. We then had to create a concept map. I have attached a picture of a graph similar to what we did so you can see what we were trying to accomplish today. Our graph had similarities and differences with Mr.Finleys though. That's just about all we did in science today. Jake Vignali