4. OBJECTIVES
To define metabolism.
OBJECTIVE 1:
OBJECTIVE 2:
To differentiate between
catabolism and anabolism.
OBJECTIVE 3:
To explain the different metabolic
processes involved in the various
organ systems
5. METABOLISM?
WHAT IS
It is from a Greek word “METABOLE”, meaning “CHANGE”. It is a set of life-
sustaining chemical transformations within the cells of living organisms. The
three (3) purposes of metabolism are:
1. Conversion of food/fuel to energy to run cellular processes.
2. Conversion of food/fuel to building blocks for proteins, lipids, nucleic
acids, and some carbohydrates.
3. Elimination of nitrogenous wastes.
Metabolism also refers to the digestion and transport of substances to all
parts of the body.
7. CATABOLISM
It is a breaking down of
organic matter by way of cellular
respiration.
It involves the breakdown of
complex molecules from food into
smaller units that can be used as
building blocks for new molecules
or to provide energy.
8.
9. ANABOLISM
It is the building up of
components of cells such as
proteins and nucleic acids.
It involves the use of energy to
build new chemicals that becomes
components of cell.
15. HOMEOSTASIS?
WHAT IS
It is a property of a system in which variables are regulated so that internal
conditions remain stable and relatively constant.
It includes regulation of temperature and the balance between acidity
alkalinity, water levels, presence of wastes, salt and other electrolytes, and
metabolism.
Human homeostasis is the process that maintains the stability of the human
body’s internal environment in response to changes in external conditions.
