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Cells and Energy
all living organisms require and use energy
19
Biology
10th Grade
01/08/2007

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Term
activation energy
Definition
energy that enables molecules to collide with the force enough to break existing chemical bonds. **ENERGY NEEDED TO START A REACTION!
Term
enzymes
Definition
proteins that supply the nergy needed to start reactions and are not used up in the reaction **end in -ase
Term
endergonic
Definition
reactions which require not only an activation energy but also require a steady input of energy to keep going. *energy mostly supplied to the cell is ATP.
Term
ATP
Definition
(Adenosine Triphosphate) supplies energy to cells
Term
ADP
Definition
(Adenosine Diphosphate) Bi-product after energy is released
Term
AMP
Definition
(Adenosine Monophosphate)
Term
Law of Conservation of Energy
Definition
energy is neither created nor destroyed but changes from one form to another
Term
sun
Definition
ultimate source of energy for living things
Term
obtain or capture energy----living things
Definition
photosynthesis
Term
requirements for photosynthesis
Definition
1. light
2. chlorophyll
Term
Raw Materials
Definition
1. enzymes
2. carbon dioxide
3. water
Term
glucose
Definition
is the end product of photosynthesis
Term
photosynthesis
Definition
a process in which green plants convert light energy from the sun into chemical energy
Term
light
Definition
provides the energy for photosynthesis
Term
chlorophyll
Definition
is a green pigment and absorbs green light
Term
xanthophyll
Definition
is a yellow pigment and absorbs yellow light
Term
carotence
Definition
is an orange pigment and absorbs orange light
Term
where does photosynthesis begin
Definition
in tiny disc like sacs called grana
Term
stroma
Definition
dence fluid that fill the spaces between the grana
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