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Cell Energetics Honors Biology
Biological catalyst made of amino acids.
Reactant an enzyme catalyzes
structure on the enzyme
The molecules needed for a chemical reaction to occur
Molecules that are made when a chemical reaction is over
The amount of energy needed for a reaction to occur.
Heat of Reaction
The difference in energy between the reactants and products of a chemical reaction
a reaction that has a "-" heat of reaction b/c it releases more energy that it stores
a reaction that has a "+" heat of reaction and stores more energy than it releases.
Speeds up a chemical reaction
Variables that effect enzyme reaction rate
Temperature, pH, enzyme concentration, substrate concentration
enzyme becomes "inactive" due to changes in the active site structure
enzyme only bonds to one substrate due to shape of active site
(adenosine triphosphate) main energy source that cells use for most of their work
ATP is converted to this and it releases energy that your cells use
Process by which some organisms, such as certain bacteria, use chemical energy to produce carbohydrates
Plants use the sun's energy to convert water and carbon dioxide into sugars
An organism that can make its own food.
An organism that makes its own food
An organism that eats other organisms
An organism that cannot make its own food.
is the transfer of food energy from one source to the next
A consumer that eats only plants.
An animal that eats other animals
A consumer that eats both plants and animals.
organism that feeds on plant and animal remains and other dead matter
An organism that breaks down wastes and dead organisms
Each step in a food chain or food web
A diagram that shows the feeding relationships between organisms in an ecosystem.
A measure of the total dry mass of organisms within a particular region
Organisms in the first trophic level, such as plants and algae.
An herbivore; an organism in the trophic level of an ecosystem that eats plants or algae
An organism that eats primary consumers
An animal that feeds on secondary consumers in a food chain.