Which of the following is true of biochemistry? a. it is a field of study that explains why life is present on earth. b. it is a field of study that has been able to describe all of the reactions that occur in a cell. c. it is a field of study that relies on laboratory science to describe life processes. d. it is a field of study that is becoming obsolete as genetic engineering has started taking its place.

C - Biochemistry is the field that studies the life processes in the laboratory setting to help describe the chemical interactions in play in living organisms.
Incorrect answers:
   
A - Paleobiology, not biochemistry, is the study of the origin of life on the planet.
   
B - It would be excessive to claim that descriptions of "all of the reactions that occur in a cell" have been completed. There is much research potential in biochemistry still.
   
D - Genetic engineering utilizes biochemistry research to modify the characteristics of living organisms but while biochemistry seeks to describe biological processes, genetic engineering attempts to modify them - two complimentary but separate fields of study that both have lots of potential.