Proteins and Vegetarians Flashcards
what are 4 elements of proteins?
carbon, hydrogen, oxygen and nitrogen
sulfur and phosphorus
state the functions of proteins
- growth, repair and maintenance of body cells
- formation of enzymes
- maintaining a healthy immune system
- as a form of energy reserve
explain how proteins aid in the growth, repair and maintenance of body cells
proteins are needed for:
- healthy growth of our body
- repair worn-out body cells and tissues
- our body cells wear out continuously and need to be replaced at regular intervals
explain how proteins aid in the formation of enzymes
- enzymes are made up of proteins
- enzymes speed up the chemical reactions in our body
explain how proteins help in maintaining a healthy immune system
proteins are needed for:
-making antibodies for our body’s immune system
they help to detect and fight harmful substances which protects our body from illness and infection
explain how proteins acts as a form of energy reserve
- protein is the 3rd form of energy reserve
- proteins will be sacrificed from bodybuilding and cell repair to provide energy
- excess energy from proteins not used will be converted into fats
list some sources of animal proteins
- meat such as beef/chicken etc
- seafood such as fish/crab
- farm products such as dairy products which includes milk/cheese or eggs
list some examples of plant proteins
- cereals such as rice/millet
- pulses such as long beans/french beans
- nuts such as peanuts/almond nuts
what are amino acids?
amino acids are the simplest form of protein
what are the different types of amino acids?
- indispensable (essential) amino acids
- dispensable (non-essential) amino acids
define indispensable (essential) amino acids
indispensable (essential) amino acids cannot be manufactured by the body and must be obtained from food
list some examples of indispensable (essential) amino acids
- phenylalanine (PKU condition)
- isoleucine
- leucine
- lysine
- threonine
- methionine
define dispensable (non-essential) amino acids
dispensable (non-essential) amino acids can be manufactured by the body and do not need to be obtained from food
list some examples of dispensable (non-essential) amino acids
- proline
- asparagine
- aspartic acid
- alanine
- glutamine
- glycine
what are the different types of proteins?
- high biological value protein (HBV)
- low biological value protein (LBV)