Intro to Metabolism

metabolism can be defined as

• totality of an organisms chemical reaction

• study of how energy flows

• serves as analogies for chemical reactions

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the laws of thermodynamics state

• potential energy is available for release in a chemical reaction

• the energy of the universe is constant (cannot be created or destroyed)

• whether or not the reaction is spontaneous

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what is an anabolic pathway?

• release of energy and breakdown of glucose

• begins with specific molecule and ends with a product

• consumption of energy which synthesizes proteins from amino acids

kinetic energy is associated with

• matter possessing due to location or structure

• associated with motion

• potential energy available for release in chemical reaction

what are 2 examples of a metabolic pathway and why?

• fermentation; it does not require oxygen

• cellular respiration; transfers chemical energy

• photosynthesis; converts light into chemical energy

• both b and c are correct

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what is a metabolic pathway?

• consumes energy

• releases energy

• starts with molecule and ends with product

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plants convert what into chemical energy

• CO2

• O2

• Glucose

• Sunlight

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when delta G is negative, the reaction is considered ______

• spontaneous; occurs without input of energy

• non-spontaneous; occurs with input of energy

• neither a or b

define free energy

• occurs without input of energy

• energy that can do work when temperature and pressure are uniform

• forward and reverse reactions occur at same rate

a reaction has a high delta g, this means that the system is

• stable

• unstable

• neither