4. Life processes
1. Maintaining boundaries
a. Every cell is surrounded by a membrane
b. The body is surrounded by skin
2. Metabolism: Chemical reactions within body cells
a. Catabolism: Destructive. Food → Nutrients
b. Anabolism: Constructive. Nutrients → Muscle
5. Life processes
1.Boundaries
2. Metabolism
a. Catabolism: Destructive. Food → Nutrients
b. Anabolism: Constructive. Nutrients → Muscle
3. Responsiveness (Irritability): Ability to respond to a
stimulus
6. Life processes
1. Boundaries
2. Metabolism
a. Catabolism: Destructive. Food → Nutrients
b. Anabolism: Constructive. Nutrients → Muscle
3. Responsiveness (Irritability): Ability to respond to a
stimulus
4. Movement: Includes movement of the whole body
(walking, running), parts of the body, and
movement within the body (blood flowing through
blood vessels, food through the digestive system,
etc.)
7. Life processes
1. Boundaries
2. Metabolism
3. Responsiveness (Irritability): Ability to respond to a
stimulus
4. Movement: Includes movement of the whole body
(walking, running), parts of the body, and
movement within the body (blood flowing through
blood vessels, food through the digestive system,
etc.)
5. Reproduction:
a. Cellular level- for growth and repair and
replacement of old cells.
b. Organism level-formation of a new individual
9. Life processes
6. Growth: Increase in size either through increased #
of cells or size of cells
7. Differentiation: Unspecialized cells develop into
specialized cells with distinctive structural and
functional characteristics
10. Life processes
6. Growth: Increase in size either through increased #
of cells or size of cells
7. Differentiation: Unspecialized cells develop into
specialized cells with distinctive structural and
functional characteristics
8. Respiration:
Cellular- breakdown of sugar into CO2 using O2
Organism- exchange of CO2and O2 in lungs
11. Life processes
6. Growth: Increase in size either through increased #
of cells or size of cells
7. Differentiation: Unspecialized cells develop into
specialized cells with distinctive structural and
functional characteristics
8. Respiration:
Cellular- breakdown of sugar into CO2 using O2
Organism- exchange of CO2and O2in lungs
9. Digestion: Breaking down food into nutrients
usable by the body
12. Life processes
6. Growth: Increase in size either through increased #
of cells or size of cells
7. Differentiation: Unspecialized cells develop into
specialized cells with distinctive structural and
functional characteristics
8. Respiration:
Cellular- breakdown of sugar into CO2 using O2
Organism- exchange of CO2 and O2
9. Digestion: Breaking down food into nutrients
usable by the body
10. Excretion: Removal of non-usable waste and by-
products of metabolism