1. ATP- Energy in a molecule

2. Energy What is work? -Work is done whenever anything is moved.
Energy is the ability to do work.

3. Energy
Energy is used to move ions and molecules across membranes in our nerves and kidneys.
Food is broken down into molecules that can enter your cells.

4. ATP
Exercise requires energy - so where does this energy come from, and how can we replace it?
ATP (adenosine triphosphate) - a high energy molecule consisting of three phosphates attached by energy bonds to adenosine.

5. ATP ATP (adenosine triphosphate)  ADP (adenosine diphosphate)
This is a continual cycle - ADP is converted back into ATP.

6. Adenosine Triphosphate ADP Adenosine Diphosphate
ATP
Adenosine Triphosphate
ADP
Adenosine Diphosphate
Ribose (sugar molecule)
Adenine (base)
3 phosphates
2 phosphates

8. Do not write Fireflies
Fireflies produce light by a process called Bioluminescence

9. How do autotrophs make sugar?
Autotrophs- organisms that make their own food
Trap energy from sunlight
Use energycarbohydrates = photosynthesis

10. Materials needed for plant Growth
Raw material
Energy source
Catalyst
What is needed for photosynthesis
Materials:Carbon dioxide, water, minerals
Energy: Light
Catalyst: Chlorophyll

11. Carbon Dioxide Gas Small part of the air 0.03%
= several hundred billion tons of CO2
w/out it plant would die

12. Water Life processes that occur in the cell Transport in the cell
Supplies hydrogen needed during photosynthesis

13. Minerals needed by plants
A plant does not need soil for growth, but it needs minerals
Minerals needed by plants
Carbon Hydrogen Oxygen
Iron Nitrogen Phosphorus
Potassium Sulfur Magnesium
Boron Zinc Molybdenum
Copper Chlorine
Manganese

14. Energy needed for plant Growth
The ultimate source of energy for life is the sun.
Only 1% of the solar energy is used by plants.
Sunlight is the source of energy that powers the chemical rxn in every cell.

15. Catalyst needed for photosynthesis
Green plants have green pigment called chlorophyll
Photosynthesis takes place only in the presence of chlorophyll

16. Cont. Chlorophyll is a catalyst. Chlorophyll traps energy of sunlight.
A catalyst is a substance that causes a chemical rxn to start and take place
it does not become part of the rxn or final product
Chlorophyll traps energy of sunlight.
Absorbs light energy from sun and uses it to power chemical rxn of photosynthesis

18. http://images. google. com/imgres. imgurl=http://www. esb. utexas

19. Photosynthesis
-process that produces energy (food) in form of carbohydrates
-produces oxygen as byproduct
-light energy is stored as chemical energy

20. Light absorption
Sun from the sun reaches earth as a white light.

22. Light absorption
Objects appear a certain color because it reflects that color and absorbs every other color.

23. Photosynthesis Two pathways 1. Light dependent reaction
2. Calvin reaction