the sun
DESCRIPTION
The Sun. the ultimate source of all energy for all life on Earth. Autotrophs Vs. Heterotrophs. An autotroph is an organism that feeds itself! (produces its own food!) A heterotroph is an organism that feeds on another organism (cannot produce own food!) - PowerPoint PPT PresentationTRANSCRIPT
The Sunthe ultimate source of allenergy for all life on Earth
Autotrophs Vs. HeterotrophsAn autotroph is an organism that feeds itself!
(produces its own food!)
A heterotroph is an organism that feeds on another organism (cannot produce own food!)
Can you think of an example of each?
Poison Sumac Lions (and Zebras for that matter!)
Autotroph or Heterotroph?
Autotroph or Heterotroph?
Autotroph or Heterotroph?
Autotroph or Heterotroph?
Make two listsMake one list of autotrophs and another list of heterotrophs
Test Results! Make your own Mastery bar graph
(just like we did last quarter) If you earned below an 80% you
should come to restudy and retake that objective.
Diffusion/Osmosis Exam
Objective 1 Objective 2 Objective 30
10
20
30
40
50
60
70
80
90
100
Period 4Period 6Period 8
Perc
enta
ge
Objective 1: types of diffusion 5 points
Objective 2: demonstrate understanding of diffusion 12 points
Objective 3: demonstrate understanding of osmosis 15 points
Objective 1 Objective 2 Objective 30
10
20
30
40
50
60
70
80
90
100
Period 4
Objective 1 Objective 2 Objective 30
10
20
30
40
50
60
70
80
90
100
Period 6
Objective 1 Objective 2 Objective 30
10
20
30
40
50
60
70
80
90
100
Period 8
Objective 1: types of diffusion 5 points
Objective 2: demonstrate understanding of diffusion 12 points
Objective 3: demonstrate understanding of osmosis 15 points
Put tests into your folder in the test crate!
They are alphabetical by last name.
Autotroph vs. Heterotroph Game
You and your chat chum need:– 1 red pen/marker/colored pencil– 1 green pen/marker/colored pencil– 1 game sheet
Pick a color– Green circles autotrophs– Red circles heterotrophs
http://www.youtube.com/watch?v=3RE7uC8QXjY
When you can no longer hear the music you need to stop!
Cell EnergeticsReminder: ALL CELLS NEED ENERGY
Autotrophs: energy from Light, through photosynthesis
Heterotrophs: use Cellular Respiration for energy
Adenine Ribose 3 Phosphate groups
Cell Energy:• Cells usable source of energy is called ATP• ATP stands for adenosine triphosphate• ATP is a chemical!
Plants are PhotoautotrophsPhoto = Light
Auto = SelfTroph = Feed
Plants are “photoautotrophs” because they feed themselves with light.
PHOTOSYNTHESIS…is the conversion of light
energy into chemical energy by living organisms
Prickly Pear Cactus Cedar Tree
Photosynthesis:• Photosynthesis is the process by which the energy of
sunlight is converted into the energy of glucose
• General formula for photosynthesis:
carbon dioxide + water + light glucose + oxygen
6CO2 + 6H2O + light C6H12O6 + 6O2
Where does Photosynthesis happen?
In Chloroplasts!
What’s in a Chloroplast?
Photosynthesis takes place within the thylakoid membranes!
• Light absorbing compound is a pigment—pigments absorb some wavelengths of light and reflect others—the color our eyes see is the color that the pigment reflects
This is why plants are green!
Plants absorb light in different wave lengths
Pigments Light absorbing molecules
Chlorophyll Pigment in plants that absorb light in the blue
region and red region. Located in the chloroplast
Green gets reflected
Light and Pigments
Why doesn’t chlorophyll absorb green light well?
This is why Chloroplast (and plants in general) are green!
• Chlorophyll is the pigment inside the chloroplast the absorbs light for photosynthesis
As the chlorophyll in leaves decays in the autumn, the green color fades and is replaced by the oranges and reds of carotenoids.