A biological macromolecule is defined as a large molecule made up of smaller organic molecules, known as monomers. There are four classes of biological macromolecules, one of them being carbohydrates. Carbohydrates are made of three base elements; Carbon, Hydrogen, and Oxygen in a 1:2:1 ratio. There are three different classes of carbohydrates; monosaccharides, disaccharides, and…
NUTRITION The study of the nutrients in foods and of the body’s handling of them. This includes ingestion, digestion, absorption, transport, metabolism, interaction, storage, and excretion. FOOD Material containing nutrients taken into the body for the maintenance of life and the growth and repair of tissues. NUTRIENTS Substances obtained from food and used in the…
Carbohydrates are the first nutrient most organisms catabolise for energy, however, living things must metabolize other energy-rich nutrients to obtain energy in times of starvation Protein Catabolism – first digested into amino acids – amino groups are removed (deamination; amino group à ammonia [NH3]) – remaining portion of amino acid converted into various components of…
The materials used in building the bodies of living things are limited to the atoms and molecules that make up this planet. To maintain life on Earth, matter must be recycled. Cycling of Organic Matter Living things are constantly cycling matter through their bodies and in ecosystems; break down organic matter and rebuild it. Organic…