Nutrition module 3
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Allied American University
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BIO 170: Fundamentals of Nutrition
Module 3 Homework Assignment
PART I: LAB ACTIVITY
Directions: This homework assignment will be written in the form of a lab report. The lab report consists of the following sections: introduction, materials/methods, data, results, conclusion, and references. The lab report must be at least two pages in length, double-spaced, Times New Roman, and 12-point font. Below are the various sections. Please structure your lab report so that it includes these sections.
Introduction
The introduction mainly consists of three components, background information, objective/purpose of the lab, and hypothesis. Each component should have a paragraph dedicated to it (total of three paragraphs).
Objective/purpose of the lab: You need to clearly define why you are conducting the lab.
Hypothesis statement: You need to create a hypothesis statement and reasoning for it prior to the start of the lab.
Materials/Methods
The materials section lists everything that is needed to complete the experiment. Please include all material that you used.
The methods section describes all the steps that were taken during the experiment. This section should be written in your own words and not take directly from the lab.
Data
The data section relays all the data of the lab. They can be presented in charts, tables, etc. The data must be easily read. If there are numerical values, please ensure the correct unit of measurement is displayed as well.
Results
The results section explains what the data means.
Conclusion
The conclusion helps sum up and gives meaning to the results. The hypothesis should be restated and confirmed if it was correct or incorrect. Any explanation of why should be given. This explanation of “why” is the driving force of the conclusion. Reference back to your Introduction to help explain data and results. The conclusion should be at least two paragraphs in length.
References
A reference section is needed. There should be a total of two references. If you have a reference in this section, it should also have an in-text citation in the lab as well. References can be obtained by using LIRN. Please visit the Academic Resource Center (ARC) for helpful APA format, LIRN, and citation information.
Tasks/Labs: You will write a lab report for the following task. You will write a lab report for the following tasks. Please note that you will need to submit 2 lab reports.
You will write a lab report for the following task:
Determine which foods have the highest concentration of vitamin C.
Vitamin C is an essential nutrient for the human body, providing our immune system with antioxidants that can help prevent disease. In this experiment, you will test food for vitamin C using indophenol solution. After gathering your supplies, create a hypothesis about the potency of vitamin C in different foods. Which substance do you think contains the most vitamin C? State if your hypothesis was correct or incorrect and why.
Follow these steps:
- From your Food Chemistry Experiment kit:
- 4 test tubes
Test tube rack
Dichloroindophenol powder
Ascorbic acid
Beaker
5 pipets
- Three liquids/foods containing vitamin C. Examples: citrus juices, vegetable juices, etc.
Describe all the steps that you plan to take during the experiment.
- Set up four clean test tubes in the rack.
Make an indophenol solution. In the beaker, combine a tiny amount (less than 1/8 of a teaspoon) of indophenol powder with 1 cup of water and stir until well mixed.
Use a pipet to put 15 drops of indophenol solution into each test tube. Dispose of the solution in a sink and clean the beaker with warm soapy water.
Use the three liquids you chose and test for vitamin C content. One drop at a time, add as much solution as is needed to make the blue color of the indophenol turn colorless. Make sure to use a separate, clean pipet for each liquid solution. Record how many drops it takes to turn the indophenol clear
In the clean beaker, or in a separate cup, create an ascorbic acid solution by mixing ¼ teaspoon ascorbic acid stirred into ½ cup of water. Repeat step 4 with the solution.
- Record the results of this experiment.
Explain what occurred and if your hypothesis was correct or incorrect. For further study, try this experiment again to compare fresh squeezed and store-bought lemon juice.
PART II: PROJECT – MINERALS
Review the seven major minerals.
Using the table below, identify the seven major minerals discussed in the lecture.
Mineral
Recommended Daily Allowance (RDA) for your age
Primary Function
Best Sources
Do you consume adequate amounts of this mineral on a daily basis? If not, explain the ways in which you can incorporate more in your diet. For each mineral, your explanation should consist of 4 to 6 sentences.
1.
2.
3.
4.
5.
6.
7.
