HeadingsVocabularyImportant info

Energy Transformations: Photosynthesis & Respiration

ATP & ADP

ATP: ______

adenine + ribose + 3 phosphates

Energy storing molecule,

only stores “_____” for a few minutes

Source of all cell ______

When 1 phosphate group breaks off

“_____” is released!!!

ADP: ______

  • Adenine + ribose + 2 phosphates
  • Molecule that results from ATP losing 1 “_____”
  • Another “____” may be added later

You get ______from the food you eat.

Where does the energy in food come from?

Almost all of the energy in living systems needed for ______= SUN.

Overview Photosynthesis

______:
Process using “E” from sunlight to convert water and CO2
oxygen and carbohydrates (sugar)

Two parts:

______:

produce O2 & converts
ADP to ATP

______(dark reactions):

use ATP from light
reactions to produce
sugars

The Stages of Photosynthesis

Stage 1 Energy is captured from ______.

Stage 2 Light energy is converted to ______energy,

Temporarily stored in ______and the “_____” carrier molecule NADPH.

Stage 3 The chemical energy stored in ______and ______powers the formation of organic compounds,

Using carbon dioxide

Photosynthesis occurs in the ______of plant cells and algae and in the cell membrane of certain prokaryotes.

Stages of Photosynthesis
Used / Produced
Stage 1 / Light, water / Oxygen, hydrogen ions
Stage 2 / Electrons, hydrogen ions / ATP, NADPH
Stage 3 / ATP, NADPH, carbon dioxide / Organic compounds

Why Do Plants Look Green?

Many people think that plants are green because plants use green light during photosynthesis.

In fact, plants do ______ use green light

Instead red and blue light are used.

Plants look green because they contain ______:

______ green and yellow light

______blue and red light.

FORMULA for PHOTOSYNTHESIS:

6CO2 + 6H2O --- C6H12O6 + 6O2

Cellular Respiration

Respiration: process that releases energy by breaking down food when oxygen is present

Formula:

6C6H12O6 + 6O2 6CO2 + 6H2O + energy

Fermentation: respiration without oxygen present

  • Two types:

Alcoholic Fermentation:

  • form ethyl alcohol and CO2 as waste products; used to make bread rise

Lactic acid Fermentation:

  • produces lactic acid in muscles when exercising without enough oxygen

GLYCOLYSIS

1ST STAGE IN CELLULAR RESPIRATION

1 MOLECULE OF GLUCOSE IS BROKEN IN ½ =

2 MOLECULES OF PYRUVIC ACID

3-CARBON COMPOUND

How Does Photosynthesis & Cellular Respiration Relate?

  • Almost opposite processes
  • Photosynthesis produces food (store)
  • Respiration breaks down food (releases)
  • Photosynthesis uses CO2 and releases O2
  • Respiration releases CO2 and uses O2

PHOTOSYNTHESIS SONG (Tune: Mambo # 5)

A little bit of CARBON-DE-OXIDE

A little bit of WATER on the side

A little bit of SUNLIGHT all day long

Makes SUGAR (kiss) and OXYGEN (breathe) to keep us STRONG!!!