Enzymes are catalysts that facilitate chemical reaction by lowering activation energy.
The collective reactions of an organism are called metabolic reactions.
The phenomena of chemical activity called metabolism.
The phenomena of chemical activity called metabolism.
A small portion of enzymes where a substrate attaches with an enzyme is called an active site.
“Metabolism is a set of biochemical reactions that occur in living organisms in order to maintain life.”
These processes allow organisms to grow and reproduce, maintain their structure, and respond to their environments.
| Catabolism vs. Anabolism | |
|---|---|
| Catabolism | Anabolism |
| 1. Definition: | |
| It is the process of breaking down larger molecules into smaller ones to release energy. | It is the process of building larger molecules from smaller ones, using energy. |
| 2. Energy usage: | |
| It releases energy because it breaks down complex molecules. | It consumes energy to create complex molecules. |
| 3. Molecules involved: | |
| Involves the breakdown of carbohydrates, fats, and proteins into simpler substances like glucose, fatty acids, and amino acids. | Involves the construction of complex molecules like proteins, carbohydrates, and lipids from simpler substances. |
| 4. Purpose: | |
| The main purpose is to provide energy for the body's activities and cellular processes. | The primary purpose is to help growth, repair damaged tissues, and support various body functions. |
| 5. Overall effect: | |
| It results in the release of energy, which can be used immediately or stored for future use (e.g., in the form of fat). | It requires energy and contributes to the growth and maintenance of the body's structures and functions. |