Not too sure about the bodily mechanics, but folic acid aids in metabolizing protein. Foods high in folic acid are avocados and sunflower seed kernels.
Protein helps to maintain and replace the tissues in your body, and found in almost every living cell and fluid
An animal cannot metabolize nutrients.
Your body can definitely metabolize medicine. If it couldn't metabolize medicine, it would then render the medication useless as it would just pass through your body unabsorbed.
Our bodies metabolize food differently.every body is different and everyone needs different nutrients to help with growth.
When cells are given nutrients, they metabolize them, and grow and divide to create more cells. If they are not given nutrients, they die.
Fats
When you starve yourself, your body does not have much to run on (food and drinks provide energy for the body). To get energy, it uses stored energy in fat cells. The body begins to metabolize these cells, and you lose fat.
Water is your body's most important nutrient, is involved in every bodily function, and makes up 70- 75% of your total body weight. Water helps you to maintain body temperature, metabolize body fat, aids in digestion, lubricates and cushions organs, transports nutrients, and flushes toxins from your body.
metabolize
a few bacteria and even then they need to metabolize an element to extract the energy traped in it
Your body is composed entirely of nutrients, or of substances that were made from nutrients.
One 12 Ounce Beer An Hour
There is no simple answer here: 1) you must have calories which the simplest form are sugars. 2) You must have all of the nutrients and enzymes to metabolize the calories-B12, Niacin, Thiamine et al. 3) Conditioning -"exercise" makes your body a more efficient energy machine.