Monday, January 31, 2011
Friday, January 28, 2011
(6CO2 + 6H20)
It made sense the formula was opposite because they do opposite things.
We reviewed that photosynthesis takes place in the chloroplasts and the cellular respirtaion takes place in the mitochondian. Plants need oxygen for cellular respiration or energy. We also talked about how we need light to live because without light, plants wouldn't be alive, which is bad since some of our food comes from plants. We discussed we needed energy to exercise and also take in CO2 and glucose. We exhale more CO2 after we exercise because we're doing cellular respiration, which takes up more energy.
Tuesday, January 25, 2011
Scientists suggest planting some plants as soon as possible on a new planet that we discovered.
1. Why would they suggest this?
They would suggest this because they want to see if the plants can survive under the atmospheric conditions.
2. What would we need to know about the planet before we start our plan?
We would need to know what the atmosphere is like so we know how much gravity and oxygen is on the planet.
3. Could the plants survive if the planet had no oxygen?
No. Since oxygen is needed for cellular respiration, life would be impossible. Oxygen is a necessity for photosyntheisis, so the planet would become devoid of life very quickly.
Then, we went over our answers. We voted on #3 and concluded that plants need oxygen. We also concluded that plants need this to provide energy to the plant. The BrainPop vidoes from last night helped us answer these questions. We related cellular respiration to digestion. We need a mouth, stomach, and an esophogus. ATP stands for adenosime trisophade. Cellular respiration is used for energy, which is also ATP. We need glucose because it provides energy as well, but eating green fruits and vegetables does the same thing. If anything ends in -ose, it is sugar. Breads and pastas are good examples of glucose because they are made of wheat, which is a plant, so it photosynthesises, which gives you glucose, which gives you energy! Remember to do your HW!
Go Packers! :-)
Monday, January 24, 2011
Whatever we start with we have to end with which is conservation of mass. The mass of the plant is made of carbon dixiode and water. Soil is just like vitamins. The plants can live without it and so can we. You just won't be as healthy.
We moved on to an experiment next. Mr.Finley gave us a military drill to do to test the amounts of carbon dixiode before and after. There were two experimentors and the rest of the people in the group were the participants. The two people running the experiment had to call out either foward- which were push-ups, and then when if they said back, you had to do st-ups or curl-ups, when they told you to go, you had to run in place as fast as possible. We tested the amount of carbon dixide before, which was low, and after, which was a higher count. We came to a conclusion that as a result of physical exertion, the induvidual's carbon dixiode level increased. We have to finish answering the queations and watch the video to help you go back to them for homework.
Friday, January 21, 2011
Thursday, January 20, 2011
Today is our second day of experimenting with Elodea. We are also using a light source. We are testing how light affects photosynthesis. Instead of using a Co2 tablet, we are using baking soda for CO2. There is tape on the table, and we put the light source at the end of the tape. The tape is already measured.Then you put the elodea that is in the test tube, on 10 cm for 4 minutes. After 4 minutes my table's Elodea had no bubbles coming up from the cut part of the Elodea. Our problem was that that the baking soda did not dissolved yet. It was it still at the bottom of the test tube. After the second time we tried the experiment on 10cm we got 3 bublbles. Then we started on 20 cm and we got 2 bubbles.
R.R Period 8
Wednesday, January 19, 2011
To set up the experiment one person had to measure the mass of the carbon dioxide tablet. If you were in the high amount group you had to get a piece weighing from 1-1.5. If you were in the medium amount group you needed a piece that weighed 0.5-1. If you were in the low amount group you needed a piece that weighed from 0-0.5. After you got the right amount you had to crush up the tablet. While someone was doing that, someone else was getting the elodea plant and getting rid of the leaves near the stem and crushing it at the bottom. A third person was getting the water. We used 20 ml of water which we measured with a graduated cylinder. Then we poured the water into a test tube.
For the experiment, the first thing to put into the test tube was the water. Next we put in the CO2. Before you add the elodea, you have to wait for the bubbling to settle down. Once it does you can put in the elodea and start your timer. Start counting the bubbles you see come off the plant. After a minute, record your results. Keep doing this after each minute until 5 minutes has passed.
Not a lot of people were able to complete the experiment. Some of the parts that confused people were for the high carbonated water was the plant kept floating up to the top so they should use 1.1 instead of 1.4 or 1.5. Another problem was people counted the wrong bubbles so they got the wrong numbers. We will do the experiment again tomorrow.
Here is a link to a video of an elodea plant during photosynthesis-
Tuesday, January 18, 2011
1. According to your notes, what is the equation for photosynthesis?
6CO2 + 6H2O yields C6H12O6 + 6O2
2. Where do plants get the CO2 for this process (what organisms release this gas) ?
They get carbon dioxide from all living things (Pants also breath oxygen and release carbon dioxide. They only need carbon dioxide for photosynthesis, but they still need to breath.)
3. What organelle in plants is responsible for photosynthesis (producing food) ?
The chloroplasts are responsible for photosynthesis in cells.
4. What is the pigment found in this organelle that absorbs light to power photosynthesis?
It's the chlorophyll.
5. If a plant were under water and was photosynthesizing, what gas would be visibly bubbling from the plant?
6. The 2 experiments can vary as long as it tests the two things efficiently. Look online to see what you have to test.
We also went over the experiment. It is in the packet that contains all the questions that were just answered in this blog. We just revised it a little. First off, we have to find the mass of the sodium bicarbonate. Also, we have to add 20 ml. of water to keep the experiment controlled. For today's homework, you have to read the experiment until you can do it without looking at the sheet. You also have to write a prediction on it (Remember: A prediction is not a hypothesis! Look at the syllabus for help.)
Here is a video for photosynthesis (has some things that are hard to understand, but won't disrupt main point of video and won't have to be learned for class): http://www.youtube.com/watch?v=mYbMPwmwx88
Friday, January 14, 2011
Thursday, January 13, 2011
Monday, January 10, 2011
Friday, January 7, 2011
Today as always we started with HW. Mr. Finley made us play a game! Not so fun though, we had to say our notes out loud and who ever has the most notes without repeating the same note. Some notes were:
- Plant's need light to make food
- Any light will work to make food for plants but Sun light makes the most
- Water is absorbed by the roots
- Oxygen is from plants
- Plants need oxygen but not for photosynthesis
- Stoma is a small opening at the bottom of the plant
- Most of of photosynthesis takes place in the chloroplasts
- Water is brought up by veins and stored in vacuoles
- The energy from the sun is stored in the sugar
- The water goes up through the roots into the steam and gets transferred into the veins
- The water goes in-between the cells
Those are a few notes we went over.
Next we got a lecture, then we did a demo.
Notes on the lecture about Photosynthesis:
- Cells around the stoma are called guard cells
- store water in vacuole
- Guard cells open and close to protect the stoma
- Osmotic- when there's too much water the water closes the stoma. So then there's less Carbon dioxide.
- Stoma is a fancy name for a whole
- The stoma doesn't absorb the water the guard cells do
- Water and Oxygen go through veins
- When they go through the veins they pass many cells and the water and oxygen go into the cells and some goes through all the way to the top of the plant
- The water wants to go into the cells
- The amount of mass is what something weights.
- The mass of the test tube is 50.2 with out the sugar
- The mass with the sugar is 52.7
- The sugar weights 2.5
- The water weights 301
- The water with salt weights 303.3
He have homework today!
Maddie Bedder(BLOG #3)
Thursday, January 6, 2011
For #1 on the HW the amount of water was higher outside but the amount of stuff was hypotonic.
Wednesday, January 5, 2011
A. was isotonic because it has the same amount as concentration as the plant cell
B. was hypertonic because it had more concentration than the others
C. was hypotonic because it had no concentration.
For part B the answers were.....
A. Was hypertonic because it has 5% stuff on the outside and 2% stuff in the inside
B. Was isotonic because it has 2% stuff on the outside and 2% of stuff inside the cell
C. Was hypertonic because it has 2% stuff in the inside and 0% stuff on the outside.
Then, we did a lab about cellular transport. There is a blood cell, plant cell, and parmeseam cell. Which one is an organism? The parmeaseam cell.
We had to make a graph and answer questions!!! If we didn't finish that was for homework!
Tuesday, January 4, 2011
Then we had to write up a ice-tea scenario and make up your own example.
WE DO HAVE HOMEWORK!!! CHECK HIS WEBPAGE!!!
kATIE gOMEZ pERIOD 8
Monday, January 3, 2011
- Diffusion is the process of molecules spreading, an example of that is when you walk in Hollister towards the cologne section, the scent/molecules spread out in the air.
- Two types of diffusion are passive and active transport. Both involve going through a membrane such as the nuclear membrane.
- Diffusion for active transport occurs from low to high concentration and for passive transport diffusion occurs from high to low concentration
- Active transport uses energy to produce diffusion so it's like a block or sled going up a hill because it doesn't "want" to go up the hill so it needs energy to do that, it doesn't automatically go up.
- On the other hand passive transport doesn't need or use energy to produce diffusion. So it's like a sled going down a hill. It doesn't try, it goes down automatically. This type of diffusion helps and benefits the cell. Also, when passive transport occurs in water it is known as osmosis. In addition an example of passive transport we have seen is the dye moving if a cheek cell.