Name:  ______________________________________________  Per.:  ________  Date:  ___________________  Assignment  #:  _________  5.1  Notes  Outline:  Energy  Flow  in  Ecosystems      Life  Depends  on  the  Sun  

 • Organisms  such  as  plants,  algae,  and  some  bacteria  are  ____________________________.      

• ____________________________________  =  Using  energy  from  the  sun  to  create  ________________________,  

releasing  oxygen  as  a  byproduct.      

 • ________________________  =  ________________________  =  Organisms  that  can  create  their  own  food    

• Ex/  Photosynthetic  organisms  

• ________________________  are  a  usable  form  of  energy  that  most  organisms  can  use    

 • Energy  is  transferred  when  organisms  eat  other  plants  or  animals.      

• ________________________  =  ________________________  =  obtain  their  energy  by  consuming  other  organisms.  

• Consumers  break  down  sugars  to  yield  energy  through  a  process  called  

________________________________________________________________________.      

 

What  about  places  that  lack  sunlight?  

• Some  areas,  such  as  deep  in  the  oceans,  do  not  receive  sunlight    

• So  how  do  these  ecosystems  obtain  energy?    

                   • Organisms  can  consume  __________________________________  that  falls  down.      

• There  are  producers,  too!  

• ____________________________________  =  process  of  using  ______________________________________  to  produce  

sugars.      

• Chemosynthetic  organisms  =  ____________________________________    

• Organisms  may  use  chemical  energy  from  hydrothermal  vents,  reducing  sulfide,  or  oxidizing  

methane  

What  Eats  What?  

• ____________________________________  =  create  food    

• ____________________________________  =  consume  plants  

• ____________________________________  =  consume  plants  and  animals  

• ____________________________________  =  consume  animals    

• ______________________________  =  consume  dead  matter  and  help  ___________________________________________.  

 Energy  Transfer  

• A  ________________________________  shows  a  simple  path  of  energy  transfer  between  organisms  

 

• Each  step  in  a  food  chain  represents  a  different  ____________________________________.      

• Producers  are  always  at  the  ________________________________________________  trophic  level.      

 • A  ____________________________________  shows  all  possible  feeding  pathways  in  an  ecosystem.      

• Each  time  an  organism  consumes  another,  some  energy  is  lost  as  ________________________.      

o Energy  is  also  used  up  through  metabolism.      

• Only  about  ____________  of  energy  gets  transferred  to  the  next  trophic  level  

 • We  can  represent  energy  transfer  through  trophic  levels  using  an  _____________________________________  

• Since  ______________  of  energy  is  lost  at  each  trophic  level,  fewer  organisms  can  be  supported  at  

higher  levels