09 Jun Lab 20: Energy and Photosynthesis pre lab and post lab
Question
Experiment 1: Paper Chromatography
Data Tables and Post-Lab Assessment
Table 1: Part 1: Chromatography Data
Solvent
Distance from Original Line to Solvent Front
Number of Bands
Rf Factor
Acetic Acid
Acetone
Mineral Oil
Water
Table 2: Part 3: Photosynthesis Data
Test Tube
Time Required to Change Color
Initial Color
Final Color
Time Required to Change Color (Hours)
1
2
3
Post-Lab Questions
1. What did the different colored bands signify in each solvent for Part 1? What pigments can you associate them with?
2. What is the osmolarity fluid used in Part 2? Why is this important? Why is it essential to keep it cool?
3. How could you modify this experiment to show the effects of different wavelengths of light on the photosynthetic rate?
4. Some plants (grasses) tend to contain a greater concentration of chlorophyll than others (pines). Can you develop a hypothesis to explain this? Would it be testable?
5. Saliva does not contain amylase until babies are two months old. How could this affect an infant’s digestive requirements?
Answer the following 5 questions in depth:
1. What was the main theme of this experiment?
2. To what degree were the objectives outlined in the introduction to this experiment met?
3. What conclusions were drawn from the results?
4. What was the clearest and also the most difficult aspects of this experiment?
5. How would you improve this experiment?
Lab 20: Energy and Photosynthesis
Pre-Lab Questions
1. Describe how the functional units for beta carotene, xanthophyll, chlorophyll A, and chlorophyll B are different. Be sure to identify the subunits that adhere to paper during chromatography.
2. Describe a technique for measuring photosynthetic rate.
3. Many deciduous trees have leaves which turn yellow in the fall. What do you suppose is happening in the leaves at the cellular and molecular level?
4. Chloroplasts and mitochondria are both are unusual in that they have double membranes and contain their own set of DNA. Can you think of any explanations for this observation?
Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteDemy. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Fill in all the assignment paper details that are required in the order form with the standard information being the page count, deadline, academic level and type of paper. It is advisable to have this information at hand so that you can quickly fill in the necessary information needed in the form for the essay writer to be immediately assigned to your writing project. Make payment for the custom essay order to enable us to assign a suitable writer to your order. Payments are made through Paypal on a secured billing page. Finally, sit back and relax.
About Writedemy
We are a professional paper writing website. If you have searched a question and bumped into our website just know you are in the right place to get help in your coursework. We offer HIGH QUALITY & PLAGIARISM FREE Papers.
How It Works
To make an Order you only need to click on “Order Now” and we will direct you to our Order Page. Fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Are there Discounts?
All new clients are eligible for 20% off in their first Order. Our payment method is safe and secure.