| Term | Definition |
| anabolism | buildup of larger molecules from smaller ones. requires energy |
| catabolism | breakdown of larger molecules into smaller ones. releases energy |
| dehydration synthesis | anabolic process that creates larger molecules |
| hydrolysis | catabolic process that decomposes carbohydrates, lipids, and proteins and splits a water molecule |
| substrate | enzymes act only on one particular chemical. |
| active sites | part of the enzyme molecule that temporarily combines w/ substrate and form an enzyme substrate complex |
| energy | capacity to change or move matter |
| oxidation | cells burn glucose molecules |
| aerobic respiration | takes place in mitochondria and transfers energy to more atp molecules |
| ADP | when ATP loses a phosphate |
| metabolic pathway | a sequence of enzyme controlled reactions |
| citric acid cycle | Krebs cycle |
| gene | protion of DNA that contains genetic info |