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Balanced Diets and Macromolecules

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Nuri Salahuddin

on 2 December 2014

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Transcript of Balanced Diets and Macromolecules

What are the four types of macromolecules?

The four types of macromolecules are lipids, proteins, carbohydrates, and nucleic acids.
How do macromolecules contribute to a balanced diet?
Carbohydrates, proteins, and lipids each have their own role when it comes to keeping a diet balanced, as we will soon see.
What are the negatives of not have a balanced diet?
Too much or too little of either carbohydrates, protein, or lipids make an imbalanced diet. Each have their own different types of side effects.
In general, eating too much will cause someone to gain weight and become sluggish, while eating too little will not give the body enough nutrients to provide it with enough energy.
How does all this related to Biology 125?
Macromolecules relate to biology 125 because in the beginning of the year we greatly discussed macromolecules in "Chapter 3: Carbon and Molecular Diversity of Life"
What are macromolecules?
Macromolecules are molecules that contain a large amount of atoms.
The three main types are carbohydrates, proteins and nucleic acids, but when discussing a balanced diet carbohydrates, proteins, and lipids are the main three that we will be discussing.
Macromolecules and the balance of diets
Why are balanced diets important?

Balanced diets are a very important part of being human because that is what helps us continue to be healthy. A balanced diet helps gives us the energy and nutrition to continue on with our daily lives.
What is a carbohydrate?
What is the role of the carbohydrate?
What is a protein?
What is the role of a protein?
What is a lipid?
What is the role of a lipid?
A carbohydrate includes sugars and polymers of sugars. The simplest carbohydrate are monosaccharides.
The role of a carbohydrate is to provide the body with energy. It gives fuel for the nervous system, gives energy to muscles, and prevent protein from being used as energy since it is needed elsewhere.
*Only play first 30 seconds*
A protein is a biologically functional molecule that has one or more polypeptides folded and coiled into a 3-D structure.
There are many different types of protein, which means protein have many different kinds of jobs. Some of the roles include helping build muscles and tissue, fight infection, send signals throughout the body, transportation, and sometimes provide energy when there is too little carbohydrate.
Lipids, also known as fats, are the one class of macromolecues that do not include true polymers. They are not large enough to be considered macromolecues.
Lipids have many roles in the body as well. They provide energy and storage for energy, insulation and protection, digestion and absorption of nutrients, used for the production of the cell membrane, and the production of hormones.
What happens when one intakes too much carbohydrate?
Too much carbohydrates in the body can cause weight gain, which could eventually lead to heart disease, stroke, or diabetes.
What happens when one intakes too much protein?
When one takes too much protein the metabolism goes into a state called ketosis. Ketosis cuts the body's appetite, and increases the elimination of body fluid. Ketosis also occurs with diabetes.

What happens when one intakes too much fats?
Too much fat in the body system can cause fat to circulate in the blood stream and clog arteries, which can cause a heart attack or stroke.
What did we learn?
We learned that lipids are highly hydrophobic, which mean they do not mix well with water, if at all.
Carbohydrates are different types of sugars. Monosaccharides are the simplest sugars, which is what more complicated carbohydrates are constructed from and that disaccharides are double sugars, which is two monosaccharides joined together by a covalent bond.
We also learned that proteins are made up of polymers of amino acids called polypeptides.
Campbell, Neil A.
Biology in Focus.
San Francisco Pearson/Benjamin-Cummings, 2005. Print.

"Healthy Eating SF Gate."
Healthy Eating SF Gate
N.p., n.d. Web. 30 Nov. 2014.

Why Is a Healthy Balanced Diet Important
. Http://www.encompassnutrients.com/store/, n.d. Web. 01 Dec. 2014.
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