biology exam 3

define enzyme

is a biological catayst that speeds up reaction
how do enzyme assist in a cell's metabolism

they allow you to do chemical reaction faster at temperatures that are conducive to light
explain the neccessity of pigments in plants, give two explain of how they function. one explain of a pigment in photosynthesis and explain of a non-photosynthesis

pigments absorb certain wavelenghts of light energy. pigments help plants capture light energy so they can convert it to chemical energy. chlorophyll captures everything but green (red and the blue volient light). non-photosynthesis are flowers of color that attract pollinators
Explain how enzyme action can be controlled by allosteric inhibition and feedback inhibition.
Feedback inhibition: a cellular change, caused by a specific activity, shuts down the activity that brought it about.

Allosteric enzymes have regulatory sites where control substances can bind to alter enzyme activity; if this control substance is the end product in the enzyme's metabolic pathway, feedback inhibition occurs.
the sight of a light independent reaction

stroma
gas that releases energy

exergonic
which law states that energy can be created or destroyed

1st law
is the the minimum energy required to start a reaction.

activitated energy
removing of an electron

oxzidation
energy tends to disperes

2nd law
locational where a substrates turns into a product

active site

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biology exam 3

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exam3

Updated

2012-10-23T22:44:51Z

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