give 3 reasons why carbohydrates, proteins, fats, vitamins, and minerals are al necessary for good nutrition?

Answer 1

Mainly

Carbohydrates are fuel
Proteins are bricks
vitamins are catalysts.

So good nutrition is the way to build and give maintenance to a growing body.

Answer 2

There's 4 subunits that the body is made out of.
Fat (lipids)
carbohydrates (starches etc.)
Protein
nucleic acid (DNA)

you're made out of these things. If you don't get enough of them, your body will rob less important body parts of those subunits, and you'll slowly start dying. Vitamins and minerals also help make up parts of the body, and they help functions run better. Vitamin C is like a glue to the body, and without it you start to fall apart, your body basically is dissolving, which is what scurvy is.

Minerals and vitamins also help catalyze certain functions, making your body work efficiently and again, keep you from dying. Iron for instance is necessary in your blood, and without it you get anemic and lack energy. Calcium is there to keep your bones and teeth working right. Vitamin D helps you absorb calcium better, and if you don't get enough you can even have mental issues.

in short, these are for energy, for keeping your body intact, for keeping you alive at all.

Answer 3

ok lets start with fats or lipids. Your body needs fat because it is the most efficient way of storing energy. Fats are needed for your nervous system to carry an impulse aong your neuronal axon. The signal that is sent from one neuron to another is literally jumping along the axon because jumping is faster than runing. The reason why it jumps is because you have fatty myelin sheaths in intervals to create nodes of ranvier. Fats are also needed for dissolving certain vitamins and hormones in order for their role to be carried out, what ever that may be.

Vitamins are organic compounds that are needed by your body to carry out all of its funcitons. Many vitamins are familiar to you such as vitamin c, vitamin d, vitamin a, and so on. One of molecule of vitamin A for example, produces two molecules of beta carotene which helps enhance your vision. Vitamin C is needed for self repair and healing. Vitamin D is needed to help a mineral work calcium. Vitamin D also called dehydrocholecalciferol, is also produced by your skin in response to sunlight.

Minerals are inorganic elements that are needed by your body in small amounts in order to help cellular function primarily. In order for the neuron to create an aciton potential the concentration gradient needs to reach the threshold. A concentration gradient is created by a sodium potassium pump, (note that sodium and potassium are minerals) which pumps sodium and potassium ions throughout the cell membrane. Neurons arent the only cells that have a concentration gradient. All cells have voltage gated ion chanels that open in response to a certain voltage created by the amount of IONS being pumped back and forth. You may also have heard of the term electrolytes which refers to these ionic substances that are minerals. Calcium is also a mineral mentioned earlier that is needed for bone strength and growth.

Proteins are a personal favorite of mine because there is virtually nothing that can take place without proteins.Proteins are the very gene products by which your body funcitons. If you here the term, "Oh its in your genes," did u ever think about what that actually means? the expression of a gene literally means that a certain amino acid is created for every codon on that gene. Amino acids are then strung together by an enzyme called peptydil transferase that is located near the tRNA molecule. once proteins are assembled they assume a certain conformation or structure that allows them to fit to a certain receptor non the cell surface. once the protein fits, a series of signal transudction pathways occur to carry out a certain function of that protein. To give u an idea of how important proteins are, a single nucleotide, whose name i forgot to tell you the truth, is mistaken to produce a wrong amino acid for the protein chain. now note, some proteins have thousands upon thousands of amino acids. but for a certain protein a certain amino acid is misplaced and the person results with full blown, sickle cell anemia. Proteins are vital for every single action that takes place every millisecond of your life essentailly. Enzymes are proteins as well, enzymes are vital for breaking down food and other substances. There is an enzyme called acetylcholineasterase that breaks down the acetylcholine receptor, if that enzyme wouldnt exist to break down acetylcholine, then your body would begin to spasm so hard that you would break your back spitting your guts out. (there is a nerve toxin that does that, its called VX toxin) I hope that helped