1. Glucose and Diffusion (diabetes)
2. Nutrition a cell needs
3. Clycolysis and Kreb’s Cycle
4. Digestion
5. Nutrition and Diet
6. What humans should eat?
7. Nutrition and choice
8. Food production
1. Glucose and Diffusion (diabetes)
Glucose provides energy for the cells. It is burned with oxygen in cell respiration to create that energy.
a. How cells obtain and use glucose
Cells can get glucose from the gut when food is digested, some of which is glucose. Glucose also comes from the liver, which makes back up glucose. Cells create their energy from glucose.
b. Why can’t we just eat sugar?
Because there are so many other essential nutrients required to run our bodies properly. We need protein to build muscle, and amino acids to build protein, fats that also provide energy and so many other things to function properly.
2. Nutrition a cell needs
Cells need all categories of nutrients to properly function; we should get carbohydrates, proteins, and fats.
3. Glycolysis and Kreb’s Cycle
Glycolysis is the how cells make ATP. It also breaks down glucose to help in the making of ATP. According to http://cellular-respiration.tripod.com/id2.html, “Glycolysis takes place in the cytosol or cytoplasm in the cell. The energy from glycolysis powers all the systems that maintain homeostasis.” Well that makes it seem much more simple doesn’t it. The Kreb’s cycle produces carbon dioxide giving cells the energy to make proteins from amino acids and to make DNA. It takes the energy from the ATP that the glycolysis produced, or it can use proteins and fats to get the energy to produce the proteins.
4. Digestion
Digestion is hugely important to for our body to get nutrients. Not only do you get a tummy ach and gross bal movements if you don’t digest your food correctly your body also doesn’t get the nutrients out of the food you’re eating. Our body breaks down the food in not just your stomach but also mainly the intestines and transfers those nutrients into the rest of the body. There are many fluids in your our digestive system that are enzymes that break down the food.
5. Nutrition and Diet
We get the majority of our nutrients and fuel through food. There are many food categories that we need to eat to get the variety of nutrients that we need. Many people don’t get optimal nutrition, and many either don’t care or don’t know how to get the proper nutrients. The diet that we chose to follow will dictate our health and overall function including mental capacity.
6. What humans should eat?
We need to get the basics including carbohydrates, proteins, fats, amino acids, mineral and vitamins. Humans should be eating balanced meals, they should look, really look at what they’re eating and understand what they are eating and how it is affecting their bodies. The carbohydrates we eat should be whole grains that metabolize slower, as well as unrefined sugars. I could go on and on but I won’t.
source: http://www.simpson.k12.ky.us/UserFiles/ChildFoodPyramidSm.gif
7. Nutrition and choice
Humans get to choose the food that we eat. And even choose things that aren’t good for us. Most us do know what is good for us, but we have choice. If something tastes good to us we eat it, often anyhow. This isn’t the only reason we eat things that are not healthful. There are also food companies and pharmaceutical companies to blame. Food companies want to produce processed poor quality food they can cell to us. And this in turn makes the pharmaceutical companies rich because we have poor quality health because of the poor quality unhealthful food we’re eating. Take type two diabetes, a self-caused disease from eating crap. Well often the person doesn’t know that they’re doing that, but what about that wonderful organization the FDA who is suppose to protect us? I could go on and on.
8. Food production
I like that we got into food production in this unit of the course. It is true that most us in our day-to-day life don’t think about where our food comes from. Of course this involves the farming of food like I discussed in my ethical issues essay. But another thing I like to due is thinking about processed foods being made in a factory. It isn’t very appetizing, even with the healthiest of foods. I have taken to making my own ketchup, yogurt, sandwich spreads and many other processed things. I make as much as I can myself and wish that more people would because then you are responsible for what is in your food. But American do really need to appreciate the full process of all food production.
Sources: Sources: Frolich PowerPoint for cells and Human Biology 10th edition, Human Biology 10th, http://www.diabeteshome.ca/where-does-glucose.php, http://www.essortment.com/all/whatisglycolys_rcot.htm, http://cellular-respiration.tripod.com/id2.html, http://digestive.niddk.nih.gov/ddiseases/pubs/yrdd/
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