The Characteristics of Living Things

1
The Characteristics of Living Things

• All living things have cellular organization,
  contain similar chemicals, use energy, respond to
  their surroundings, grow and develop, and
  reproduce.

2
The Characteristics of Living Things

• Cellular Organization
•  
• All organisms are made of small building blocks
  called cells.
•  
• A cell is the basic unit of structure and
  function in an organism.
•  
• Unicelluar, or single-celled organisms are
  composed of one cell. Bacteria are unicellular
  and the most numerous organisms on Earth.
•  
• Multicelluar organisms are composed of many cells
  that are specialized to do certain task.

3
(No Transcript)
4
(No Transcript)
5
(No Transcript)
6
The Characteristics of Living Things

• The Chemicals of Life
•  
• The cells of all living things are composed of
  chemicals.
•  
• The most abundant chemical in cells is water.
•  
• Carbohydrates are a cells main energy source.
•  
• Proteins and lipids are the building materials of
  cells.
•  
• Nucleic acids are the genetic material-chemical
  instructions that direct the cells activities.

7

• Carbon, hydrogen, oxygen, nitrogen, phosphorus,
  and sulfur (sometimes called CHNOPS) make up
  about 98 of the mass of all living organisms.

8
The Characteristics of Living Things

• Energy Use
•  
• The cells of living organisms use energy to
  function
•  
• Response to Surroundings
•  
• Stimulus is the change in an organisms
  surroundings that causes the organism to react.
•  
• Stimuli include changes in temperature, light,
  sound, and other factors.
•  
• Response, an action or change in behavior, is an
  organisms reaction to a stimulus.

9
(No Transcript)
10
(No Transcript)
11
The Characteristics of Living Things

• Growth and Development
•  
• Living things grow and develop.
•  
• Growth is the process of becoming larger.
•  
• Development is the process of change that occurs
  during an organisms life to produce a more
  complex organism.
•   
• Reproduction
•  
• Organisms reproduce to produce offspring that are
  similar to the parents.

12
Growth and Development
13
Reproduction