The Grow-Nothing Party
- Project reviewer
Joined 03 Nov 2016
Project by group mmhsharrisfall2016project
Info
| Explore | We know that all plants undergo cellular respiration and we want to see if temperature affects the rate of cellular respiration. |
|---|---|
| Research Question | How does temperature affect cellular respiration? |
| Predictions | Our prediction/hypothesis for the experiment is that cellular respiration will take place at a faster rate in warmer temperatures, than cooler temperatures. |
| Experimental Design | Materials: 70 Germinating peas, 100 mL graduated cylinder, DI water, 5 vials, 5 steel washers, Absorbent cotton balls, 15% potassium hydroxide (KOH), Non-absorbent rayon, 5 graduated pipets, 5 stoppers, 2 trays (1 green, 1 black), Hot water bath, Red food coloring, Thermometer, Hot... |
| Conclusion | After completing our experiment, we were given varied results. Our control respirometer, which was tested at room temperature (24°C), started to increase quickly and then after about 10 minutes the rate of increase started to level out. After 25 minutes of cellular respiration, our control... |
| About this Project |
Updates
I enjoyed working with you. Have a very merry holiday!
Thank you for helping us with this project! We appreciated your insight. Good luck with your baby! We hope everything goes well.
In your key it would be useful to specify what the numbers represent. What is 0.2? 0?
That's the key. We couldn't get it off of there.
Hmmm...maybe put a text box over it and relabel the lines with the different variables they represent
Thank you for uploading the graphics! I look forward to hearing your analysis.
Materials:
50 Germinating peas
100 mL graduated cylinder
Water
5 vials
5 steel washers
Absorbent cotton balls
15% potassium hydroxide (KOH)
Non-absorbent rayon
5 graduated pipets
5 stoppers
2 trays (1 green, 1 black)
Hot water bath
Red food coloring
Thermometer
Hot plate
Fridge
Peas germinate quickly, be sure they don't start rotting, which may happen after a day in water. Did you dechlorinate the water before starting?
We let the peas germinate in DI water.
Sounds good, just be sure to include that detail in your materials list so instead of saying "water" add "distilled water"
What is the red food coloring for?
The red food coloring is for us to measure the oxygen in the respirometer
These are our materials. We also have a hot water bath
Are those pea seeds soaking in the beaker?
Yes
I am impressed with the careful planning you have invested so far. Keep up the great work!
We have decided that we will be using a fridge to maintain the cold temperature instead of ice.
We had originally wanted to use a perfect vacuum to experiment the effect of pressure on cellular respiration. After more planning, we realized that the supplies we needed for the experiment would not fit into the vacuum. There also wouldn't be a way for us to test our results every few minutes without opening the vacuum and changing the pressure. Then we resorted to our second experiment idea we had previously written down. The materials are easier to access and the procedure is easier to maintain. We will control the cold temperature by keeping a constant record of the water's temperature and being sure to add more ice where it is needed. We will maintain the hot temperature by keeping a constant temperature on a hot plate. We will constantly be checking the pressure for both to make sure that the temperature stays as constant as we can make it.
Sounds great! I would love to hear why you decided to switch topics and how you intend to control the temperature during the experiment.
After researching the vacuum, we have decided to change our experiment to: Does the rate of cellular respiration change with temperature change?
We also won't have another class until Monday.
After a little bit of thinking, here are our possible topics for research:
1. In a perfect vacuum, would cellular respiration take place more efficiently?
2. Do different temperatures affect the rate of cellular respiration?
3. Does the rate of cellular respiration differ in aquatic and land plants?
These are very interesting questions! Do you have the necessary equipment to create a perfect vacuum? If not I'd recommend researching one of the other ideas.
We do have the equipment the make a perfect vacuum and we have decided to continue with that specific experiment.
Here are our thoughts for our first research topic:
1a. This investigation will further our understanding of cellular respiration because we will be able to understand the affect the varying pressure inside of the vacuum has on the plants.
b. We will create a respirometer to measure the intake of oxygen. We will put the plants in a tube and place that in the equilibrium water. Each tub of water will go in either the vacuum or in regular pressure environment. Once the experiment is finished, we will record the data that we found.
c. We will record and measure how much oxygen each respirometer took in and see which environment is most efficient for cellular respiration.
d. We will need plants, a tub of equilibrium water, a respirometer, and a thermometer for regulating temperature.
This sounds like a fun experiment! Do you have a hypothesis?
This sounds like a fun experiment! Do you have a hypothesis?
Hi! We're students from Mother of Mercy High School. Our names are Marin, Julia, Lindsay, and Alexis. Our group name is the grow-nothing party. We are looking forward to working with you and exploring the wonderful world of plants! We are interested in doing something with cellular respiration and are beginning our investigation to find a research topic today.
Great to meet you all! I'm not able to enjoy my favorite game of rolling down hills currently since I'm due to have a baby this January. But as soon as spring comes I'll be running and jumping around again! My name is Mary Dudley and I work in Cincinnati at the Civic Garden Center. I love learning about plants and trying new techniques in school gardens. We have been enjoying some unseasonably warm weather and I've been taking time to do a lot of outdoor cooking from our fall harvest of roots and greens! What are your favorite plants to munch on?