proteins Flashcards
amino acids are made up of?
an amino group (H2N) an R group and a carboxyl (COOH)
non essential amino acids
we can make ourselves or from food
conditionally essential
healthy bodies can make
essential amino acids
bodies can not make
protein is what percent if the dry mass of most cells
50%
protein functions
defense, storage, transport, cellular communication, movement and structural support
enzymatic proteins function?
selective acceleration of chemical reactions
enzymatic protein example
digestive enzymes catalyze the hydrolysis of bonds in food molecules
defense proteins function
protection against disease
defense proteins example
antibodies inactivate and help destroy viruses and bacteria
storage proteins function
storage of amino acids
storage proteins example
casein (milk) or ovalbumin (protein of egg whites
transport proteins function
transport substances
transport protein examples
hemoglobin or cell membranes
hormonal proteins function
Coordination of an organisms activities
hormonal proteins, example
insulin and high blood sugar
receptor proteins function
Response of cell to chemical stimuli
receptor proteins examples
Built into the membrane of a nerve cell detects, signaling molecules released by other nerves cells
contractile motor proteins function
Movement
contractile and motor proteins examples
you dilation of cilia and flagella
structural proteins function
Support
Structural, proteins example
hair, hordes, feathers, and other skin appendages
Polypeptides
Unbranched polymers built from the same set of 20 amino acids
protein
A biologically functional molecule that consist of one or more polypeptide