Which term is define as all the chemical reaction that are required to sustain life?

a]metabolism


b]regulation


c]nutrition


d]synthesis

Which term is define as all the chemical reaction that are required to sustain life?
METABOLISM. Metabolism is the sum of the group of reactions to obtain energy and basic compounds from food (catabolism), and the group of reactions to form organic molecules and to use energy obtained form food (anabolism).
Reply:Alex is right.
Reply:d synthesis





Synthesis (biosynthetic) reaction


A chemical reaction in which new bonds are formed.


For example: A + B à AB where A and B have been joined by a new bond to form AB (i.e., A-B).


The word synthesis, of course, means to produce something via a synthesis reaction and the prefix bio refers to this occurring within or by a living organism.





"All organisms. . . must use nutrients to make chemical building blocks that are used for growth and for all the other functions essential to life. For most (organisms), synthesizing these building blocks requires them to breakdown nutrient substances and use the energy released to assemble additional resulting molecular fragments into new substances."