Using a Food Database This activity will help you meet these educational goals:
You will evaluate a solution to a complex real-world problem based on scientific knowledge.
You will evaluate the reasoning behind accepted explanations or solutions to determine the merits of arguments.
Directions
Read the instructions for this self-checked activity. Type in your response to each question, and check your answers. At the end of the activity, write a brief evaluation of your work.
Activity
In this activity, you’ll use USDA Food Data Central to analyze the last three foods you ate and complete a table of the vitamins and minerals each food contains. Keep the following notes in mind as you search for each food:
You can search for any food in the database, including brand-name foods.
Non-water beverages can be included in your search.
If you can’t find the exact food, use the closest version you can find.
After making your selection, you’ll be taken to a page where you can adjust the serving size. Take your best estimate of the serving size you consumed. Then scroll down to find the total vitamins and minerals in each food.
Some foods won’t have a specific mineral or vitamin listed if it doesn’t exist naturally in that food. And in a few rare cases, the database entry may be incomplete. Compare your selected entry with similar entries of that food to determine whether the food has that nutrient. If you’re unsure, select a different food.
Part A
Now complete the table. Fill in the name of each food and the amount of each vitamin it contains. Be sure to include the proper units (example: 25 grams). Note that microgram = μg.
Part B
Use the dietary reference intake charts for vitamins and minerals to find the recommended intake for these micronutrients for people your age. If you ate these three foods every day for all three meals, would you meet your daily recommendations for vitamin C, potassium, vitamin B12, and iron?
Part C
Nutrition experts recommend that most people eat less than 2,300 milligrams of sodium a day for good heart health. What percentage of this limit did you consume by eating these three foods? Are you surprised by this total? Explain your response.
Part D
Most people don’t need to count every single micronutrient they eat. Instead, doctors recommend that they eat a well-balanced diet with a wide variety of healthy foods. Why is this recommendation important for maintaining homeostasis in the body? Use the data collected from your three foods to support your explanation.

question#1

ans:

cell is the basic unit of organization of all living things. cells are often called the building block of life and it is the smallest unit of life. the study of cell is called cell biology. cell consists of cytoplasm enclosed within membrane, which contain bio-molecules such as proteins and nucleic acid.

two third of cell is water, which means that two-third of your whole body is water. the rest is the mixture of molecules, mainly proteins, lipids and carbohydrates.

question#2

ans:

organ:

an organ is a group of tissues specialized to form a functional unit. an example is the heart in animals.

organ system:

an organ system is a group of several organs whose functions are synchronized to release an effective action in a living organism. an example is digestive system.

question#3

different systems perform different function at tissue level. for example, the respiratory system facilitates breathing. in the alveoli tissue of the lungs, the exchange of oxygen and carbon dioxide molecules between the air and the bloodstream occurs by passive transport, so that oxygen is taken in and carbon dioxide and water are removed. different systems of the body carry out different functions. for example, your digestive system is responsible for taking in and processing food, while your respiratory system working with your circulatory system is responsible for taking up oxygen and getting rid of carbon dioxide.

question#4

different systems perform different function at tissue level. for example, the respiratory system facilitates breathing. in the alveoli tissue of the lungs, the exchange of oxygen and carbon dioxide molecules between the air and the bloodstream occurs by passive transport, so that oxygen is taken in and carbon dioxide and water are removed. different systems of the body carry out different functions. for example, your digestive system is responsible for taking in and processing food, while your respiratory system—working with your circulatory system is responsible for taking up oxygen and getting rid of carbon dioxide.

question#5

our body works because of the interactions that happen between organs and organ systems.  

for example:  

the heart to regulate blood flow throughout the body. the blood carries oxygen and nutrients to the cells and carries carbon dioxide and waste away from the cells. body systems work together in maintaining a constant internal environment. when this balance is disrupted, the body systems may not function properly, and human health can suffer.   you start to feel bad.

it is a. i hope this .