Sunday, November 22, 2009

photosynthesis and resperation

in the beginning of the week we made up a flow chart for two things. they were respiration and photosynthesis. for humans/ animals we decided for respiration that we breath in oxygen and out CO2. also that all living things breath or respirate. then for photosynthesis we decided that it is only for plants. they breath in co2 and let out oxygen for us to breath. this also helps the plant turn green.they also need sunlight to photosynthesis. we learned this by a video thing wit questions and other stuff.then the next day we decided to test and see if the plant needed all these things to photosynthesis (light, water and CO2). two table groups would do each experiment. our table did the water. we put a spinach leaf into both meaning two of the containers and put water in one and not in the other to see if the one without water would still photosynthesis. we put it near a light bulb also. the next day we came in and checked the oxygen levels. the normal level was 2o6ppt. then with the one with water its level was -17 ppt nd the without water was about 0 ppt. if to much CO2 built up over night the top popped off. we just learned about that most of the week.

Thursday, November 5, 2009

this week we continued to learn about the structures and organelles of an animal cell, plant cell, and this week we added on a bacteria cell. the most different cell is the bacteria cell. it is the only one that can move(a few animal cells can but not a lot). that night for homework we had to make a triple Venn diagram of bacteria cells, animal cells, and plant cells. since you are narrowing it down more to different cells there are less things you can put in the one cell that the other cells cant do or don't have. as i said before the bacteria cell was the most different and so it had the most in just it's circle(i.e. the flagella). also that night we had to finish up class work which was a list of organelles and there functions and if they were from the animal cells, plant cells or both. the both column was the most popular there were only 2 organelles that only belong to the plant cells(chloroplasts and cell walls).

the next day we had two questions to answer. they were
  • are paramecium animal cells
  • how are paramecium moving
  • answer #1 they're not animal cells nor plant cells but protozoa
  • answer #2 they move with their cilia's.

that's what we discussed that day and then on wed. we had a quiz and then looked at paramecium's.