concept one
what is a chemical reaction?
the breaking and forming of bonds between different substances during a chemical reaction
what controls metabolic reactions?
enzymes
what are the five ways to change the rate of a chemical reaction?
what is the difference between a consumer and a producer?
consumer: gets energy from living things, also called heterotroph
producer: gets energy from non-living things, most capture energy through photosynthesis, also called autotrophs
what is a food web?
system of showing multiple food chains at once and how they interconnect
what is the differerance between catabolic and anabolic reactions?
catabolic is the breaking down of larger molecules while anabolic is is the building up of smaller particles to make large molecules
what are enzymes?
they are very specialized molecules that bond to reactants to help to break or form bonds, making a product
what do temperature and pH do to a reaction?
temperature: increasing temp. increases rate of reaction
pH: if pH change so does the speed of a reaction
what are the four types of consumers?
1. herbivores- only eat vegetation
2. carnivores- only eat meat
3. omnivores- eat meat and vegetation
4. detritivores-eat dead material
what is a tropic pyramid?
model that shows how energy flows through an ecosystem
what is a reactant?
substance that is changed during a chemical reaction
what is denaturing?
it is when an enzymes active site is deformed and losses its shape
How does substrate concentration affect a reaction?
the higher the amount of substrate the faster the reaction
what is a food chain?
they are used to trace a single floe=w of energy and show tropic levels
what is the rule of 10?
as the chain moves from organism to organism each organism only receives ten percent of the energy of the previous orgaism
what is a product?
substance that is made by a chemical reaction
can enzymes be renatured?
yes but not always
How does catalyst affect a reaction?
speed up reactions
what is a tropic level?
the levels of nourishment in a food chain
what happens to the other 90% of energy from organism to organism?
it is lost as heat or used
what are the two types of reactions?
endothermic-absorbs energy and
exothermic-releases energy
what is the photosynthesis and cellular respiration equation?
Photosynthesis- 6CO2+6H2O - C6H12O6+6O2
cellular respiration- C6H12O6+6O2 - 6CO2+6H2O
How does competitive inhibiture affect a reaction?
slows down reaction
what is the order of the tropic levels?
producers to primary consumers to secondary consumers to tertiary consumers
what is an energy pyramid?
It represents the energy available in each tropic level, it always gets smaller