The basic unit of structure and function of all living things
Cell
All cells are made up of this chemical material
protoplasm
a collection of similar cells that work together in performing a particular function.
tissues
a combination of two or more tissues that are combined to peform a specific function.
organ
organs that have similar or related functions are?
system
the 4 major classes of organic compounds found in cells are:
proteins
carbohydrates
nucleic acids
lipids
two things contained in protoplasm?
organic compounds
inorganic compounds
Comprise of 15% of the cell, assist in growth, constructing new tissues, and repairing injured or worn-out tissues.
proteins
two kinds of proteins:
amino acids
enzymes
the building blocks of proteins. There are 22 different kinds.
amino acids
Act as organic catalyst. Control the numerous chemical reactions that occur in cells.
enzymes
Comprise approximately 2% of the cell. Function in storing energy, insulating our bodies from cold, assisting with the digestive process, and helping to lubricate the joints.
lipids
Make up 1% of the cell. Major source of cell energy.
carbohydrates
divisions of carbohydrates:
monosaccharides-simple sugars(glucose)
disaccharides-double sugars(sucrose)
polysaccharides-macromolecules(cellulose)
the process of converting a comlpex substance into a simpler substance