CHARACTERISTICS OF LIFE

• Energy


  is the ability of organisms to

  do work and allow them to perform

  vital activities such as growth,

  movement, and reproduction
• nutrition.


  All organisms need to feed to survive,

  grow, and reproduce. The process by

  which organisms acquire food is called
• Catabolism


  Breakdown of larger

  molecules
• Anabolism


  Synthesis of larger

  molecules
• Waste Elimination


  Inside the body of the organism, all

  metabolic processes must be

  coordinated and regulated.
• homeostasis.


  The

  maintenance of the body’s internal

  environment is called
• Adapting and Evolving


  Certain responsive processes allow

  organisms to react to changes in their

  surroundings in a predictable and

  meaningful way.
• Motility


  Most animals can move from one

  place to another by walking, flying,

  swimming, gliding, or jumping.
• Irritability


  The

  ability of an organism to respond

  appropriately against a stimulus is

  called sensitivity or
• tropism or response.


  The reaction of an organism to stimuli
• External Stimuli


  When an organism

  reacts such as fight or flight mode
• Internal Stimuli


  When an organism

  is hungry or wounded
• Adaptation


  For living things to survive and

  perform normal functions, the ability to

  adjust to changes in the environment

  is a must.
• Evolution


  to the changes in

  characteristics of a group of

  organisms (populations) over time.
• Sexual reproduction


  Organisms reproduce with the use of

  two individuals contributing their sex

  cells to produce a unique individual of

  their kind.
• Asexual Reproduction


  occurs when an organism makes

  copies of itself, as commonly found in

  lower life forms.
• Unicellular


  an organism that

  consists of a single cell, unlike a

  multicellular organism that consists of

  multiple cells
• Multicellular


  organism is an

  organism that consists of more than

  one cell.
• life cycle.


  The ability of an organism to grow and

  develop throughout its
• Growth

  is an increase in size and

  volume by converting food to become

  part of the body cells.
• intussusception.


  Living things

  exhibit growth from within the cells in a

  process called
• organogenesis.


  growth involves more complex

  processes of cell differentiation and

  the formation of new organs or
• Development


  All living things undergo defined

  stages in their life cycle which starts with birth

  and ends with death.