Unit 1

• nutrition: obtaining of food to provide energy and substances needed for growth, development and repair
• respiration: chemical reactions that occur in the cells to break down nutrients such as glucose to release energy
• movement: the ability of an organism to change place or position
• growth: a permanent increase in size of an organism; involves an increase in cell number, cell size or both
• metabolism: the chemical reactions that occur in the organism
• excretion: removal of waste materials and substances in excess of requirements from the body
• sensitivity: the ability to detect these stimuli and respond to them
• reproduction: process of making more of the same organism