4. The knowledge of biology is needed and used in curing genetic disorder and noncommunicable diseases. Ex.: Cancer, Heart Failure, Stroke, Diabetes, etc.
5. Biological knowledge is used in feeding a hungry world. Ex.: Food production.
CHARACTERISTICS OF LIFE
All matters are classified into two (2) general groups: Non-living matters (Inorganic matters) and Living matters (Organic matters). Non-living matters are matters that do not have life. They are inanimate objects. Examples: rock, water, chair, table, book, pen, bench, etc. Living matters are matters that have life or carry out life characteristics. Examples: humans, cat, dog, trees (plants), bacteria, etc. All living organisms, from the smallest Bacterium to the largest Whale or Elephant, share certain characteristics of life.
Characteristics are set of qualities or attributes that distinguish a person or a thing. In Biology, there are eight characteristics of life which distinguish living things from non-living things. These characteristics of life are as follow:
1. Cellular organization
2. Reproduction
3. Metabolism
4. Homeostasis
5. Heredity
6. Response to stimuli
7. Growth and development
8. Adaptation through evolution
1. Cellular Organization= all living things must have one or more cells. Cell is the basic unit of life. In higher organisms, these cells grouped together to form tissues, and tissues grouped together to form organs, and organs together form an Organ system. In addition, the complex organizations of living things begin with the atom, the smallest unit of matter that can enter into chemical combination. These atoms also contain subatomic particles. Atoms combine to form molecules; several molecules make up an organelle, a structure in the cell that performs
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a specific function. Organelles give rise to the cell, which is the basic unit of structure and function of living organisms. Each cell is composed of an organized living matter called protoplasm, enclosed by barrier (cell membrane). Cell is the lowest level of biological organization. All living things must have cell, whether "uni or multi". In multicellular organisms, similar cells working together to perform a specific function or activity form tissue. Group of tissues with similar function give rise to an organ; a group of organs make up a system; and several systems working together make up an organism.
1. Reproduction= living things must be able to reproduce for the continuation of their
