🏷️ LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION →
Log in
English
1
answer
1
watching
280
views

Discovering Photosynthesis Experiment

Overview:
In this activity you will review the data from an experiment that tested what happens to plants when they don't receive a specific nutrient. You will draw conclusions and answer questions based on the data from the experiment.
 
Background Information:
Plants go through a process called photosynthesis to make their own food. Photosynthesis is a process that uses sunlight, carbon dioxide, and water to make sugars. The sugars then go through a process called cellular respiration to make chemical energy that the plant can use.
  • Photosynthesis is the process that converts solar energy into sugars in the form of glucose.
  • Cellular respiration is the process that converts sugars into a form of energy that the cell can use.
Photosynthesis occurs in the chloroplasts of plant cells. Chloroplasts contain chlorophyll that absorb energy from sunlight and also give plants their green color. This energy is necessary for the chemical reaction of photosynthesis to occur. Photosynthesis requires carbon dioxide and water and produces sugar and oxygen. This is how oxygen is put into the air for all organisms to breathe.
 
All organisms go through cellular respiration. Cellular respiration is the reverse reaction of photosynthesis. Cellular respiration uses sugars and oxygen to produce water, carbon dioxide, and energy. This process releases energy from the sugars that organisms make or consume. Producers create sugars during photosynthesis and then go through cellular respiration. Consumers must eat other organisms to go through cellular respiration. Once cellular respiration occurs, its products become the reactants for photosynthesis and they create a cycle.
  • Producers are organisms that produce energy from photosynthesis.
  • Consumers eat producers or other consumers for their energy.
Lab Overview:
This experiment tested the different nutrients needed to go through photosynthesis and involved 6 bean plants. Each plant was grown without a certain nutrient. These plants were two weeks old prior to beginning the experiment so that some growth was already present. The progress of plants in different environments was recorded over a period of two weeks and there were 2 replications of each group. The control group was kept in normal conditions and given normal amounts of water and sunlight. Group A was not given any water but received normal amounts of sunlight. Group B was kept in a dark space without sunlight but given normal amounts of water.
 
Pre-Lab Questions:
Before beginning any part of the experiment, you will need to write a hypothesis about what you think will happen and answer the following questions. Your hypothesis should be formatted as an "if, then" statement.
1. Hypothesis:
2. What are the controls of the experiment? (what must remain consistent in the groups)
3. What is the Independent variable?
4. What is the Dependent Variable?
 
Below is information about the lab, how it was conducted, and the data collected.
Lab:
Lab Materials:
- 6 bean plants, with the same pots, amount of soil and same amount of growth
- Graduated Cylinder
- Ruler
- Sunny spot for the plants
- Dark spot for the plants
 
Lab Procedure:
Day 1:
1. First measure and record the height of each plant and observe what it looks like. Record the color, how many leaves it has, if it looks rigid or dry, and anything else. you notice. Label each plant based on its group.
2. Place each plant in its correct spot based on whether or not it will receive sunlight.
a. The control group will get full sunlight and water.
b. Group A will get full sunlight, but no water.
c. Group B will get no sunlight, but will get water.
Day 2:
3. Measure the height of each plant and make observations.
4. Water the control group and Group B.
Follow the instructions from Day 2 every other day. (Days 4,6,8,10,12, and 14 )
 
Data:
 
Post-Lab Questions:
Based on the procedure and data collected, draw conclusions and interpret the data to answer the following questions.
1. What happened in the Control Group throughout the experiment?
2. What happened in Group A throughout the experiment?
3. What happened in Group B throughout the experiment?
4. Why do you think that there was more growth in the Control group compared to... (Think about why it couldn't grow. This is more than just because it lost water or sunlight.)
Group A?
Group B?
5. What does the lack of growth have to do with photosynthesis?
6. Was your hypothesis supported? Why/Why not?
 
Submission:
You will submit a written or typed response with the answers to the pre-lab and post lab questions.
 
Grading Rubric

 

Watch
1
answer
1
watching
280
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Avatar image
Read by 1 person

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share

Related questions

Writing a Paragraph
Select one of the following topic sentences and, on separate paper in Word, write a paragraph based on it.
Afterwards, click upload your paragraph(6-9 sentences) and submit.
The topics are:
1. I made that argument at the time, but if I had a second chance, I wouldn't repeat it.
2. It was the worst piece of news l ever had to deliver.
3. I confronted authority and learned from the experience.
4. It was an act of generosity I will never forget.
5. Sometimes there are good reasons for lying.
6. Alcohol addiction has physical, social, and vocational effects.
7. There are several ways to show affection.
8. The job didn't pay well, but it provided me with a good education in balancing my budget, managing my time, and dealing with the public.
9. Homeless people are in their situation for different reasons.
I have attached a reminder of how to write a paragraph

Scientific Method Project

Overview:
In this assignment, you will be using the scientific method to develop your own experiment. You will not be conducting the experiment but you will develop one based on a hypothesis. You will submit a project containing the needed information outlined under the "Project" section.
 
Background Information:
The scientific method is a process used by scientists to develop experiments and test hypotheses. This process begins by making observations. The next step is to develop a question based on these observations, such as how something works.
 
Based on the question under investigation, a hypothesis is created. A hypothesis should be a prediction of what happens. It is written in an "if, then" format. An experiment is designed to test a specific hypothesis. A scientific experiment should have an independent variable, dependent variable, and a control group. The independent variable is what is changed in the experiment. The dependent variable is what is measured in the experiment.
 
A control group is a group in which the independent variable undergoes no change. The control group in an experiment serves as a baseline to measure the results of the experiment and can be very useful in isolating unknown factors which may influence the dependent variable.
 
Remember that a good experiment includes multiple repetitions for each experimental group.
Once an experiment has been conducted, all of the data collected is analyzed. Scientists look for trends in the data and use statistical analysis to compare all of the experimental groups. This is then compared to the hypothesis to see if the data does or does not support the hypothesis. Through this method, scientists draw conclusions about their hypothesis based on whether or not their experiment was successful.
 
Project:
Below are the instructions for each section of the project. For this assignment you will follow the steps of the scientific method and develop your own experiment.
You will need to include all of the following information:
Topic: Start by deciding what you would like to investigate. Your topic may be related to biology, the environment around you, or some other topic you are interested in.
 
Observations: Make a number of observations related to your topic. If the topic you chose isn't something you can observe around you then you may conduct research about your topic and record any noteworthy information. Include a paragraph describing your observations in your final submission.
 
Questions: Using your observations or research, think about your topic and ask some questions. Think about how it works or why it may behave a certain way. Come up with two or three questions about your topic.
 
Hypothesis: Use the questions you came up with to develop your hypothesis. This is a prediction of what you think will happen and should be able to be tested. A hypothesis is written in an "if, then" format. If this happens, then this will happen.
 
Experiment: Once you develop a hypothesis, think of how it could be tested in an experiment. What would you be testing? What would you measure? Remember that you need a control group. The purpose of this group is to serve as a reference that can be used to compare your experimental results to. This gives you something to compare with all the experimental groups and monitor any change. Record all of the following information about your experiment.
Independent Variable: This is what you are changing in the experiment.
Dependent Variable: This is what you are measuring.
Control Group: This is the group unaffected by the independent variable.
Experimental Groups: These are the groups affected by the independent variable and there should be multiple replications for each group.
 
Submission:
Be creative with how you present your information. This can be done in a list, in a chart, in paragraph form, or another way. Be sure to include your topic, observations, questions, hypothesis, and the details of your experiment. Be descriptive with your language in each section and use correct grammar.
 
You will submit a document or presentation with the required information for each part of the scientific method. Label each part and make sure the information is complete. You only need to include the parts of the scientific method included under "Project."
 
Grading Rubric
 
 
 
Write an essay contrasting the attitude taken toward England in the following excerpts from two historical documents -- "The Mayflower Compact" and "The Crisis-X: On The King Of England's Speech" by Thomas Paine.
Remember:
Be sure to support your stance with adequate, relevant details from the texts.
 
Write at least 350 word
 
Excerpts:
The Mayflower Compact: In the name of God, Amen. We whose names are underwritten, the loyal subjects of our dread Sovereign Lord King James, by the Grace of God of Great Britain, France, and Ireland King, Defender of the Faith, etc. Having undertaken for the Glory of God and advancement of the Christian Faith and Honor of our King and Country, a Voyage to plant the First Colony in the Northern Parts of Virginia, do by these presents solemnly and mutually in the presence of God and one of another, Covenant and Combine ourselves together in a Civil Body Politic...for the general good of the Colony, unto which we promise all due submission and obedience. In witness whereof we have hereunder subscribed our names at Cape Cod, the 11th of November, in the year of the reign of our Sovereign Lord King James, of England, France and Ireland the eighteenth, and of Scotland the fifty-fourth. Anno Domini 1620.
 
The Crisis-X: On The King Of England's Speech:
How easy it is to abuse truth and language, when men, by habitual wickedness, have learned to set justice at defiance. That the very man who began the war, who with the most sullen insolence refused to answer, and even to hear the humblest of all petitions, who has encouraged his officers and his army in the most savage cruelties, and the most scandalous plundering...and invoked every aid of hell in his behalf, should now, with an affected air of pity, turn the tables from himself, and charge to another the wickedness that is his own, can only be equaled by the baseness of the heart that spoke it.

Related Documents

ENG 108 Lecture Notes - Lecture 1: Independent Clause
lilacgoose335
ENG 1131 Lecture Notes - Lecture 4: Apa Style
goldelk436
ENG - English ENG 2330 Chapter Notes - Chapter Tablets 9 - 10: Twin Dragons, Enkidu, Urshanabi
lilaccattle824

Weekly leaderboard

Home
Homework Help 3,900,000
English 6,000
Start filling in the gaps now
Log in